Chess Puzzles
2401-2500
Mate in Two
White to Move
László Polgár
Links
2401
2411
2421
2431
2441
2451
2461
2471
2481
2491
2402
2412
2422
2432
2442
2452
2462
2472
2482
2492
2403
2413
2423
2433
2443
2453
2463
2473
2483
2493
2404
2414
2424
2434
2444
2454
2464
2474
2484
2494
2405
2415
2425
2435
2445
2455
2465
2475
2485
2495
2406
2416
2426
2436
2446
2456
2466
2476
2486
2496
2407
2417
2427
2437
2447
2457
2467
2477
2487
2497
2408
2418
2428
2438
2448
2458
2468
2478
2488
2498
2409
2419
2429
2439
2449
2459
2469
2479
2489
2499
2410
2420
2430
2440
2450
2460
2470
2480
2490
2500
2401
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0J0o0Z0
0Z0ZpZ0Z
Z0ZkM0Z0
0Z0Z0L0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
L. Merénye, 1926
b
c
d
e
f
g
h
2401
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0o0Z0
0J0ZpZ0Z
Z0ZkM0Z0
0Z0Z0L0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Kb6, Kd6
Qd4
b
c
d
e
f
g
h
2402
8
7
6
5
4
3
2
1
QZ0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0ZpZ0Z
Z0Z0ZpZK
0Z0Z0Z0Z
S0Z0Z0lk
a
L. Merénye, 1926
b
c
d
e
f
g
h
2402
8
7
6
5
4
3
2
1
0L0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0ZpZ0Z
Z0Z0ZpZK
0Z0Z0Z0Z
S0Z0Z0lk
a
Qb8
If Qf1+, RXf1.
Otherwise, Qh2.
b
c
d
e
f
g
h
2403
8
7
6
5
4
3
2
1
0ZKZ0Z0Z
Z0Z0Z0Z0
0Z0jNO0Z
Z0Z0ZQZ0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
L. Merénye, 1926
b
c
d
e
f
g
h
2403
8
7
6
5
4
3
2
1
0ZKZ0Z0Z
Z0Z0ZPZ0
0Z0jNZ0Z
Z0Z0ZQZ0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
pf7
If Kc6, Qc5. If Ke7, pf8(Q).
c
d
e
f
g
h
2404
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0ZQZ0Z0
0Z0O0Z0Z
MpZ0Z0Z0
kZ0Z0Z0Z
Z0J0Z0Z0
0Z0Z0Z0Z
ZNZ0Z0Z0
a
L. Merénye, 1926
b
c
d
e
f
g
h
2404
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
ZQZ0Z0Z0
0Z0O0Z0Z
MpZ0Z0Z0
kZ0Z0Z0Z
Z0J0Z0Z0
0Z0Z0Z0Z
ZNZ0Z0Z0
a
b
Qb7
If pb4+, QXb4. If KXa5, Qa7.
c
d
e
f
g
h
2405
8
7
6
5
4
3
2
1
0Z0Z0ZKZ
Z0Z0Z0L0
0Z0Z0Z0Z
ZBZ0Z0Z0
0Z0ZkZ0Z
Z0Z0O0Z0
0Z0Z0ZPZ
Z0Z0A0Z0
a
V. Metlitzky, 1969
b
c
d
e
f
g
h
2405
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0ZKL0
0Z0Z0Z0Z
ZBZ0Z0Z0
0Z0ZkZ0Z
Z0Z0O0Z0
0Z0Z0ZPZ
Z0Z0A0Z0
a
b
c
d
Kf7
If KXe3, Qe5. If Kd5, Qd4. If Kf5, Bd3.
e
f
g
h
2406
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0ZKZ0Z0Z
Z0Z0Z0Z0
0Z0ZkZBA
Z0ZpZ0Z0
0Z0Z0Z0L
Z0ZNZ0Z0
a
V. Metlitzky, 1972/73
b
c
d
e
f
g
h
2406
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0ZKZ0Z0Z
Z0Z0Z0Z0
0Z0ZkZBA
Z0ZpZ0Z0
0Z0L0Z0Z
Z0ZNZ0Z0
a
Qd2
If Kd4, Qf4. If Ke5, Qe3.
b
c
d
e
f
g
h
2407
8
7
6
5
4
3
2
1
0M0Z0Z0Z
Z0Z0A0J0
0Z0Z0Z0Z
Z0Z0j0Z0
0Z0Z0o0Z
Z0Z0Z0ZQ
0Z0ZBZ0Z
Z0Z0Z0Z0
a
V. Metlitzky, 1967
b
c
d
e
f
g
h
2407
8
7
6
5
4
3
2
1
0M0Z0Z0Z
Z0Z0A0J0
0Z0Z0Z0Z
Z0Z0j0Z0
0Z0Z0o0Z
Z0Z0ZQZ0
0Z0ZBZ0Z
Z0Z0Z0Z0
a
b
c
d
Qf3
If Kd4, Nc6. If Kd6, Qe4. If Kf5, Qd5.
e
f
g
h
2408
8
7
6
5
4
3
2
1
0Z0ZKZ0A
Z0Z0ZpZ0
0Z0Z0ZPj
Z0Z0ZQZ0
0Z0Z0Z0Z
Z0Z0Z0Z0
bZ0Z0Z0Z
Z0Z0Z0Z0
a
F. M. Mihalek, 1979
b
c
d
e
f
g
h
2408
8
7
6
5
4
3
2
1
0Z0ZKZ0Z
Z0Z0ZpZ0
0Z0Z0APj
Z0Z0ZQZ0
0Z0Z0Z0Z
Z0Z0Z0Z0
bZ0Z0Z0Z
Z0Z0Z0Z0
a
Bf6
If pXg6, Qh3.
Otherswise, Qg5.
b
c
d
e
f
g
h
2409
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0ZpM0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0L0ZNZ0
0Z0Z0ZkZ
Z0Z0J0ZR
a
A. Mihailov, 1983
b
c
d
e
f
g
h
2409
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0ZpM0Z
Z0Z0L0Z0
0Z0Z0Z0Z
Z0Z0ZNZ0
0Z0Z0ZkZ
Z0Z0J0ZR
a
b
Qe5
If KXh1, Qh2. If KXf3, O-O.
c
d
e
f
g
h
2410
8
7
6
5
4
3
2
1
0ZNZ0Z0Z
Z0Z0Z0j0
0ZQZ0Z0Z
Z0Z0Z0M0
0Z0S0ZKZ
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
J. Minckwitz, 1875
b
c
d
e
f
g
h
2410
8
7
6
5
4
3
2
1
0ZNZ0Z0Z
Z0Z0Z0j0
0Z0Z0Z0Z
Z0Z0Z0M0
0Z0S0ZKZ
Z0L0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
Qc3
If Kf6-h6, Rd6. If Kf8-h8, Rd8.
c
d
e
f
g
h
2411
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
L0O0Z0Z0
0Z0ZPZ0Z
ZkZ0J0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
NZ0Z0Z0Z
M0Z0Z0Z0
a
A. Mironov, 1982
b
c
d
e
f
g
h
2411
8
7
6
5
4
3
2
1
0ZBZ0Z0Z
L0Z0Z0Z0
0Z0ZPZ0Z
ZkZ0J0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
NZ0Z0Z0Z
M0Z0Z0Z0
a
pc8(B)
If Kc6, Bd7. If Kc4, Ba6.
b
c
d
e
f
g
h
2412
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
L0Z0Z0Z0
0Z0ZPZ0Z
ZkZ0O0Z0
0Z0ZKZ0Z
Z0Z0Z0Z0
NZ0Z0Z0Z
M0Z0Z0Z0
a
A. Mironov, 1982
b
c
d
e
f
g
h
2412
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
L0Z0Z0Z0
0Z0ZPZ0Z
ZkZ0O0Z0
0Z0ZKZ0Z
ZNZ0Z0Z0
NZ0Z0Z0Z
Z0Z0Z0Z0
a
Nb3
If Kc6, Nd4. If Kc4, Qa4.
b
c
d
e
f
g
h
2413
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
L0O0Z0Z0
0Z0ZPZ0Z
ZkZ0Z0Z0
0Z0ZKZ0Z
Z0Z0Z0Z0
NZ0Z0Z0Z
M0Z0Z0Z0
a
A. Mironov, 1982
b
c
d
e
f
g
h
2413
8
7
6
5
4
3
2
1
0ZNZ0Z0Z
L0Z0Z0Z0
0Z0ZPZ0Z
ZkZ0Z0Z0
0Z0ZKZ0Z
Z0Z0Z0Z0
NZ0Z0Z0Z
M0Z0Z0Z0
a
pc8(N)
If Kc6, Qb6. If Kc4, Nd6.
b
c
d
e
f
g
h
2414
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0ZQZ0Z0
0Z0Z0Z0Z
Z0A0Z0jP
0Z0Z0Z0Z
Z0Z0Z0O0
0Z0Z0Z0J
Z0Z0Z0Z0
a
A. Miskolczy, 1911
b
c
d
e
f
g
h
2414
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0ZQZ0Z0
0Z0Z0Z0Z
Z0A0Z0jP
0Z0Z0ZPZ
Z0Z0Z0Z0
0Z0Z0Z0J
Z0Z0Z0Z0
a
b
c
d
e
f
g
pg4
If Kf4, Qf5. If Kf6, Qe7. If Kh4, Be7. If Kh6, Be3.
h
2415
8
7
6
5
4
3
2
1
0Z0Z0s0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0j0
0L0Z0Z0S
AKZBZ0Z0
a
W. Moykin, 1973
b
c
d
e
f
g
h
2415
8
7
6
5
4
3
2
1
0Z0Z0s0L
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0j0
0Z0Z0Z0S
AKZBZ0Z0
a
b
c
d
e
f
g
h
Qh8
If RXh8, Be5. If Rb8+, QXb8. If Rf4, Qh3. If Kf4, Qe5.
Otherwise, Qh4.
2416
8
7
6
5
4
3
2
1
0S0Z0Z0Z
Z0j0Z0Z0
0Z0Z0Z0s
Z0Z0Z0Z0
BZ0Z0Z0Z
Z0Z0Z0Z0
KL0Z0Z0Z
A0Z0Z0Z0
a
V. Moykin, 1973
b
c
d
e
f
g
h
2416
8
7
6
5
4
3
2
1
0S0Z0Z0L
Z0j0Z0Z0
0Z0Z0Z0s
Z0Z0Z0Z0
BZ0Z0Z0Z
Z0Z0Z0Z0
KZ0Z0Z0Z
A0Z0Z0Z0
a
b
c
d
e
f
g
h
Qh8
If RXh8, Be5. If Rh2+, QXh2. If Rd6, Qc8. If Kd6, Qe5.
Otherwise, Qd8.
2417
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Zp
0Z0ZQZ0Z
Z0Z0Z0j0
0Z0Z0Z0Z
Z0Z0J0Z0
0Z0Z0ZNZ
Z0ZBZ0Z0
a
E. Montvid, 1893
b
c
d
e
f
g
h
2417
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Zp
0Z0ZQZ0Z
Z0Z0Z0j0
0Z0Z0Z0M
Z0Z0J0Z0
0Z0Z0Z0Z
Z0ZBZ0Z0
a
b
c
Nh4
If KXh4, Qg4. If ph6 or ph5, Nf3.
d
e
f
g
h
2418
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0o
Z0Z0o0Z0
0Z0ZkZ0J
Z0Z0Z0ZB
0Z0L0Z0Z
Z0Z0Z0M0
a
E. Montvid, 1901
b
c
d
e
f
g
h
2418
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0o
Z0Z0o0Z0
0Z0ZkZ0J
Z0Z0ZNZB
0Z0L0Z0Z
Z0Z0Z0Z0
a
Nf3
If KXf3, Bg2. If ph5, Ng5.
b
c
d
e
f
g
h
2419
8
7
6
5
4
3
2
1
0M0Z0Z0Z
ZnZ0J0Z0
0o0Z0Z0Z
Z0ZkZ0Z0
0Z0O0Z0Z
Z0ZQZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
E. Montvid, 1901
b
c
d
e
f
g
h
2419
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
ZnZ0J0Z0
No0Z0Z0Z
Z0ZkZ0Z0
0Z0O0Z0Z
Z0ZQZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Na6
If Kc6, pd5.
Otherwise, Nb4.
b
c
d
e
f
g
h
2420
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0APjNZ0Z
Z0Z0Z0Z0
0ZBZ0Z0Z
Z0Z0Z0Z0
0ZQZ0Z0Z
Z0Z0Z0Z0
a
G. Mosiashvili, 1982
b
c
d
e
f
g
h
2420
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0APjNZQZ
Z0Z0Z0Z0
0ZBZ0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
c
d
Qg6
If KXc6, Nc5. If Ke5, Be7. If Ke7, Be5.
e
f
g
h
2421
8
7
6
5
4
3
2
1
0Z0S0Z0Z
Z0Z0Z0Z0
0Z0ZNj0Z
Z0Z0M0Z0
0Z0Z0Z0Z
Z0Z0J0ZQ
0Z0Z0Z0Z
Z0Z0Z0Z0
a
J. Mostert, 1960
b
c
d
e
f
g
h
2421
8
7
6
5
4
3
2
1
0Z0S0Z0Z
Z0Z0Z0Z0
0Z0Z0j0Z
Z0M0M0Z0
0Z0Z0Z0Z
Z0Z0J0ZQ
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
c
d
e
f
g
Nc5
If KXe5, Qe6. If Ke7, Qh4. If Kg7, Qh8. If Kg5, Ne4.
h
2422
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0J0A0Z0Z
Z0Z0Z0Z0
kZ0ZNZ0Z
Z0S0Z0Z0
0ZnZ0Z0Z
m0Z0Z0Z0
a
G. Mott-Smith, 1937
b
c
d
e
f
g
h
2422
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0J0A0Z0Z
Z0Z0Z0Z0
kZ0ZNZ0Z
Z0ZRZ0Z0
0ZnZ0Z0Z
m0Z0Z0Z0
a
b
Rd3
If Nb3, Nc3. If Nb4, Nc5.
If Na3, RXa3. Otherwise, Ra3.
c
d
e
f
g
h
2423
8
7
6
5
4
3
2
1
RZ0Z0Z0Z
akZ0Z0Z0
0ZRo0Z0Z
Z0Z0Z0Z0
KZ0Z0Z0Z
Z0Z0Z0Z0
0ZQZ0Z0Z
Z0Z0Z0Z0
a
G. Mott-Smith, 1942
b
c
d
e
f
g
h
2423
8
7
6
5
4
3
2
1
RZ0Z0Z0Z
akZ0Z0Z0
RZ0o0Z0Z
Z0Z0Z0Z0
KZ0Z0Z0Z
Z0Z0Z0Z0
0ZQZ0Z0Z
Z0Z0Z0Z0
a
Ra6
If KXa8, Qc8. If Bc5, Qh7.
Otherwise, Qc6.
b
c
d
e
f
g
h
2424
8
7
6
5
4
3
2
1
0Z0Z0Z0J
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0o0L
Z0Z0Z0Z0
0Z0Z0Z0M
Z0Z0ZBjr
a
G. Mott-Smith, 1937
b
c
d
e
f
g
h
2424
8
7
6
5
4
3
2
1
0Z0Z0Z0J
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0o0Z
Z0Z0Z0Z0
0Z0Z0Z0M
Z0Z0LBjr
a
b
c
d
e
Qe1
If RXh2+, Bh3. If KXh2, Qf2. If pf3, Qg3.
f
g
h
2425
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0l0Z0Z0
QZ0Z0Z0Z
Z0j0M0Z0
0Z0Z0Z0Z
J0ZRZ0Z0
a
G. Mott-Smith, 1939
b
c
d
e
f
g
h
2425
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0l0Z0Z0
QZ0Z0Z0Z
Z0j0M0Z0
KZ0Z0Z0Z
Z0ZRZ0Z0
a
b
c
d
e
f
g
h
Ka2
If Qa3+, QXa3. If Qc4+, QXc4. If Qd5+, NXd5. If Qa5, QXa5.
If Qb4, Qc2. If Qb5, Qd4. If Qb6 or Qa7, Nd5. Otherwise, Qb3.
2426
8
7
6
5
4
3
2
1
kZ0Z0Z0Z
Z0ZNZ0Z0
KO0ZrZ0Z
L0Z0Z0Z0
0Z0m0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
G. Mott-Smith, 1932
b
c
d
e
f
g
h
2426
8
7
6
5
4
3
2
1
kZ0Z0Z0Z
Z0ZNZ0Z0
KO0ZrZ0Z
Z0Z0L0Z0
0Z0m0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
c
d
e
f
g
h
Qe5
If RXb6+, NXb6. If RXe5 or Nc6 or Re8, pb7. If Rd6, Qe8.
Otherwise, Qb8.
2427
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0J0Z0Z0Z
Z0ZkM0Z0
0Z0ZNZQZ
Z0ObZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
G. Mott-Smith, 1937
b
c
d
e
f
g
h
2427
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0J0Z0Z0Z
Z0ZkZ0Z0
0ZNZNZQZ
Z0ObZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
c
Nc4
If BXc4, Qf5. If BXe4 or KXc4, Qg8.
Otherwise, Nf6.
d
e
f
g
h
2428
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0ZBo0Z0
0Z0O0Z0Z
Z0ZkZ0J0
0Z0Z0Z0Z
Z0L0Z0Z0
0Z0Z0M0Z
Z0Z0Z0Z0
a
G. Mott-Smith, 1937
b
c
d
e
f
g
h
2428
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0ZBo0Z0
0Z0O0Z0Z
Z0ZkZ0J0
0Z0ZNZ0Z
Z0L0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
c
d
e
f
Ne4
If KXe4 or pe6, Bc6. If pXd6, Nf6. If pe5, Qd3.
g
h
2429
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
ZKZ0Z0a0
0Z0Z0Z0Z
Z0ZkZ0Z0
0Z0Z0ZNZ
A0O0Z0Z0
0Z0ZQZ0Z
Z0Z0Z0Z0
a
G. Mott-Smith, 1934
b
c
d
e
f
g
h
2429
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
ZKZ0Z0a0
0Z0Z0Z0Z
Z0ZkZ0Z0
0Z0Z0Z0Z
A0O0Z0Z0
0Z0ZQM0Z
Z0Z0Z0Z0
a
Nf2
If Bd4, pc4. If Be5, Qa2.
Otherwise, Qe4.
b
c
d
e
f
g
h
2430
8
7
6
5
4
3
2
1
0Z0Z0j0A
Z0ZKaPZ0
0Z0ZRZ0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0L0Z
Z0Z0Z0Z0
a
G. Mott-Smith, 1937
b
c
d
e
f
g
h
2430
8
7
6
5
4
3
2
1
0Z0Z0j0A
Z0ZKaPZ0
0Z0ZRZ0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
QZ0Z0Z0Z
Z0Z0Z0Z0
a
Qa2
If KXf7, Rf6.
Otherwise, Re8.
b
c
d
e
f
g
h
2431
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0A0Z0
0Z0ZBZ0Z
Z0Z0j0Z0
0Z0ZpZ0Z
ZQZ0Z0Z0
0Z0Z0Z0Z
Z0Z0J0Z0
a
J. Miller, 1914
b
c
d
e
f
g
h
2431
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0A0Z0
0Z0ZBZ0Z
Z0Z0j0Z0
0Z0ZpZ0Z
ZQZ0Z0Z0
0Z0ZKZ0Z
Z0Z0Z0Z0
a
b
c
d
Kf2
If Kd4, Qb2. If Kf4, Qb8. If pe3, QXe3.
e
f
g
h
2432
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
J0Z0Z0Z0
0Z0Z0L0Z
S0Z0Z0Z0
nj0Z0Z0O
Z0ZRZ0Z0
a
I. Murarasu, 1988
b
c
d
e
f
g
h
2432
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
J0Z0Z0Z0
0Z0Z0L0Z
S0Z0Z0Z0
nj0Z0Z0O
S0Z0Z0Z0
a
b
Ra1
If KXa3, Qb4.
If Nc1, QXc1. Otherwise, Qc1.
c
d
e
f
g
h
2433
8
7
6
5
4
3
2
1
0ZRZ0Z0J
Z0Z0Z0Z0
0Z0M0Z0Z
ZQZ0Z0Z0
0Z0j0Z0Z
Z0Z0a0Z0
0Z0Z0Z0Z
ZnZ0Z0Z0
a
M. Myllyniemi, 1954
b
c
d
e
f
g
h
2433
8
7
6
5
4
3
2
1
0ZRZ0Z0J
Z0Z0Z0Z0
0Z0M0Z0Z
Z0Z0ZQZ0
0Z0j0Z0Z
Z0Z0a0Z0
0Z0Z0Z0Z
ZnZ0Z0Z0
a
Qf5
If Nd2, Nb5. If Nc3, Rc4.
Otherwise, Qe4.
b
c
d
e
f
g
h
2434
8
7
6
5
4
3
2
1
0Z0Z0J0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
m0Z0Z0Z0
0Z0Z0Z0Z
LbZ0Z0Z0
BZ0Z0Z0Z
j0M0Z0Z0
a
E. Myhre, 1928
b
c
d
e
f
g
h
2434
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0J0
0Z0Z0Z0Z
m0Z0Z0Z0
0Z0Z0Z0Z
LbZ0Z0Z0
BZ0Z0Z0Z
j0M0Z0Z0
a
b
c
d
e
Kg7
If BXa2, QXa2. If Nc4 or Nc6 or Nb7, NXb3.
Otherwise, Qc3.
f
g
h
2435
8
7
6
5
4
3
2
1
0Z0ZKZ0Z
Z0Z0Z0Z0
0Z0okZ0Z
Z0Z0O0Z0
0Z0Z0Z0Z
Z0Z0ZBL0
0Z0Z0Z0Z
a0Z0Z0Z0
a
M. Myllyniemi, 1981
b
c
d
e
f
g
h
2435
8
7
6
5
4
3
2
1
0Z0ZKZ0Z
Z0Z0Z0L0
0Z0okZ0Z
Z0Z0O0Z0
0Z0Z0Z0Z
Z0Z0ZBZ0
0Z0Z0Z0Z
a0Z0Z0Z0
a
Qg7
If pXe5, Qg6. If BXe5, Qf7.
Otherwise, Qf6.
b
c
d
e
f
g
h
2436
8
7
6
5
4
3
2
1
RZ0Z0Z0Z
Z0Z0Z0ZB
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
ZNZ0Z0Z0
0o0o0Z0Z
Z0ZkZKZ0
a
M. Myllyniemi, 1970/71
b
c
d
e
f
g
h
2436
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0ZB
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
ZNZ0Z0Z0
Ro0o0Z0Z
Z0ZkZKZ0
a
b
c
Ra2
If pb1(Q), RXd2. If pb1(N), Bc2.
d
e
f
g
h
2437
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
KL0Z0Z0Z
a0ZNZ0Z0
0ZkZ0M0Z
Z0Z0Z0Z0
a
M. Myllyniemi, 1965
b
c
d
e
f
g
h
2437
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
KZ0Z0Z0Z
a0ZNZ0Z0
0ZkZ0M0Z
Z0Z0L0Z0
a
b
c
d
e
Qd1
If Bb2, Qd1. If Bc1, QXc1. If Bb4-f8, Qc1.
f
g
h
2438
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0s0Z0Z0Z
a0L0Z0Z0
kZ0Z0Z0Z
Z0Z0Z0Z0
KZNZ0Z0Z
Z0ZNZ0Z0
a
M. Myllyniemi, 1957
b
c
d
e
f
g
h
2438
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0s0Z0Z0Z
a0L0Z0Z0
kM0Z0Z0Z
Z0Z0Z0Z0
KZ0Z0Z0Z
Z0ZNZ0Z0
a
b
Nb4
If BXb4, Nb2. Otherwise, Nc3.
c
d
e
f
g
h
2439
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0LpZn
0Z0Z0ZkZ
Z0Z0ZNZ0
0Z0Z0J0Z
Z0Z0Z0Z0
a
N. Nadezhdin, 1969
b
c
d
e
f
g
h
2439
8
7
6
5
4
3
2
1
0Z0Z0Z0L
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0ZpZn
0Z0Z0ZkZ
Z0Z0ZNZ0
0Z0Z0J0Z
Z0Z0Z0Z0
a
b
c
d
Qh8
If pf4, Qd8. If Kf4, Qd4. If Kh3, QXh5.
Otherwise, Qh4.
e
f
g
h
2440
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0ZKZ0
0Z0Z0Z0M
aRZ0Z0Z0
0Z0ZkZ0Z
Z0Z0A0ZQ
a
E. Nogovitzin, 1974
b
c
d
e
f
g
h
2440
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0ZKZ0
0Z0Z0Z0M
aRA0Z0Z0
0Z0ZkZ0Z
Z0Z0Z0ZQ
a
Bc3
If Kf2, Qe1. If Kd3, Qe4.
Otherwise, Qf3.
b
c
d
e
f
g
h
2441
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
ZkA0Z0Z0
0O0Z0Z0Z
Z0ZKZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0ZBZ0
a
B. Nazarov, 1982
b
c
d
e
f
g
h
2441
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
ZkA0Z0Z0
0O0J0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0ZBZ0
a
Kd6
If Ka8, Bg2. If Kc8, Ba6.
b
c
d
e
f
g
h
2442
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
ZkA0Z0Z0
0O0Z0Z0Z
Z0ZKZ0Z0
0Z0ZNZ0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0ZBZ0
a
B. Nazarov, 1982
b
c
d
e
f
g
h
2442
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
ZkA0Z0Z0
0O0Z0Z0Z
ZBZKZ0Z0
0Z0ZNZ0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Bb5
If Ka8, Bc6. If Kc8, Nd6.
b
c
d
e
f
g
h
2443
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0ZR
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0J
Z0Z0ZpLB
0Z0Z0Z0m
Z0Z0Z0Zk
a
V. Negodayev, 1971
b
c
d
e
f
g
h
2443
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0ZR
0Z0Z0Z0Z
Z0Z0Z0J0
0Z0Z0Z0Z
Z0Z0ZpLB
0Z0Z0Z0m
Z0Z0Z0Zk
a
b
c
d
Kg5
If pf2, Qg2. If Nf1, BXf1. If Ng4, BXg4.
e
f
g
h
2444
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
kZKZ0Z0L
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0o0Z0Z0Z
Z0Z0Z0Z0
a
O. Nemo, 1929
b
c
d
e
f
g
h
2444
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
kZKZ0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0L0Z0
0o0Z0Z0Z
Z0Z0Z0Z0
a
b
c
d
Qe3
If pb1(Q) or Ka5, Qa3. If pb1(N), Qb6.
e
f
g
h
2445
8
7
6
5
4
3
2
1
0Z0Z0ZBZ
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0J0Z0
0Z0Z0Z0Z
ZnZNZ0Z0
0Z0Z0Z0Z
jbZ0Z0ZQ
a
V. Nestorescu, 1959
b
c
d
e
f
g
h
2445
8
7
6
5
4
3
2
1
0Z0Z0ZBZ
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0J0Z0
0Z0Z0Z0Z
ZnZNZ0Z0
0Z0Z0Z0Z
jbZ0Z0L0
a
b
Qg1
If Ka2, Qa7.
If Nd4, QXd4. Otherwise, Qd4.
c
d
e
f
g
h
2446
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
Qo0Z0Z0Z
Z0Z0Z0Z0
0j0J0Z0Z
Z0Z0o0Z0
0Z0ZPZ0Z
Z0A0Z0Z0
a
Gy. Neukomm, 1928
b
c
d
e
f
g
h
2446
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
Qo0Z0Z0Z
Z0ZKZ0Z0
0j0Z0Z0Z
Z0Z0o0Z0
0Z0ZPZ0Z
Z0A0Z0Z0
a
b
c
Kd5
If pb5, Qa3. If Kb3 or Kc3, Qc4.
d
e
f
g
h
2447
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0J0Z
ZPZ0Z0Z0
0Z0ZkZ0Z
ZPO0Z0L0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Gy. Neukomm, 1929
b
c
d
e
f
g
h
2447
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0J0Z
ZPZ0Z0Z0
0O0ZkZ0Z
Z0O0Z0L0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
pb4, Kd5
Qd3
b
c
d
e
f
g
h
2448
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
o0ZQZ0Z0
NZ0Z0Z0Z
Z0Z0Z0Z0
0ZkZ0Z0Z
Z0ZRm0ZK
a
Gy. Neukomm, 1930
b
c
d
e
f
g
h
2448
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
o0MQZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0ZkZ0Z0Z
Z0ZRm0ZK
a
Nc5
If pa4, Qd2.
Otherwise, Qb3.
b
c
d
e
f
g
h
2449
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0o0Z0Z0Z
ZKZ0Z0Z0
0Z0o0ZNZ
Z0ZkZ0MR
a
Gy. Neukomm, 1931
b
c
d
e
f
g
h
2449
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0o0Z0M0Z
ZKZ0Z0Z0
0Z0o0Z0Z
Z0ZkZ0MR
a
b
c
Nf4
If Kc1, N(g1) e2. If Ke1, N(g1) h3.
d
e
f
g
h
2450
8
7
6
5
4
3
2
1
KZ0Z0Z0Z
mQZ0Z0Z0
0Z0Z0Z0Z
Z0j0O0Z0
0Z0o0Z0Z
Z0ZBZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Gy. Neukomm, 1931
b
c
d
e
f
g
h
2450
8
7
6
5
4
3
2
1
KL0Z0Z0Z
m0Z0Z0Z0
0Z0Z0Z0Z
Z0j0O0Z0
0Z0o0Z0Z
Z0ZBZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
Qb8
If Kc6 or Kd5, Qd6.
If Nb5, QXb5. Otherwise, Qb5.
c
d
e
f
g
h
2451
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0ZBo0ZKZ
Z0ZNj0Z0
0Z0ZnZ0Z
Z0Z0L0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Gy. Neukomm, 1927
b
c
d
e
f
g
h
2451
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0ZKZ0
0ZBo0Z0Z
Z0ZNj0Z0
0Z0ZnZ0Z
Z0Z0L0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Kf7, Kf5
Qf4
b
c
d
e
f
g
h
2452
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0ZQZ0Z0Z
Z0A0j0Z0
0ZnZ0ZpZ
Z0Z0Z0M0
0Z0Z0J0Z
Z0Z0Z0Z0
a
Gy. Neukomm, 1931
b
c
d
e
f
g
h
2452
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0ZQZ0Z0Z
Z0Z0j0Z0
0AnZ0ZpZ
Z0Z0Z0M0
0Z0Z0J0Z
Z0Z0Z0Z0
a
b
Bb4
If Kd4, Qe4. If Kf4, Qf6.
If Nd6, QXd6. Otherwise, Qd6.
c
d
e
f
g
h
2453
8
7
6
5
4
3
2
1
0JNZ0Z0Z
Z0ZNO0Z0
0ZkZ0Z0Z
Z0Z0ZPZ0
0ZBZ0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Gy. Neukomm, 1928
b
c
d
e
f
g
h
2453
8
7
6
5
4
3
2
1
0JNZRZ0Z
Z0ZNZ0Z0
0ZkZ0Z0Z
Z0Z0ZPZ0
0ZBZ0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
pe8(R), KXd7
Bb5.
b
c
d
e
f
g
h
2454
8
7
6
5
4
3
2
1
0Z0Z0ZKZ
Z0Z0APO0
0Z0ZkZ0Z
Z0Z0Z0Z0
0ZNZ0Z0Z
Z0ZQZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Gy. Neukomm, 1927
b
c
d
e
f
g
h
2454
8
7
6
5
4
3
2
1
0Z0Z0SKZ
Z0Z0A0O0
0Z0ZkZ0Z
Z0Z0Z0Z0
0ZNZ0Z0Z
Z0ZQZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
pf8(R), KXe7
Qd6
b
c
d
e
f
g
h
2455
8
7
6
5
4
3
2
1
0Z0ZNZ0Z
Z0Z0j0O0
0ZBZ0ZKZ
Z0Z0Z0Z0
0Z0S0Z0Z
Z0Z0O0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Gy. Neukomm, 1927
b
c
d
e
f
g
h
2455
8
7
6
5
4
3
2
1
0Z0ZNZRZ
Z0Z0j0Z0
0ZBZ0ZKZ
Z0Z0Z0Z0
0Z0S0Z0Z
Z0Z0O0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
pb8(R), Ke6
Re4
b
c
d
e
f
g
h
2456
8
7
6
5
4
3
2
1
0Z0Z0jBZ
Z0Z0ZNMP
0Z0Z0Z0Z
Z0Z0ZKA0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Gy. Neukomm, 1927
b
c
d
e
f
g
h
2456
8
7
6
5
4
3
2
1
0Z0Z0jBS
Z0Z0ZNM0
0Z0Z0Z0Z
Z0Z0ZKA0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
ph8(R), KXg7
Bh6
b
c
d
e
f
g
h
2457
8
7
6
5
4
3
2
1
0Z0Z0ZQM
Z0Z0Z0Z0
0Z0Z0O0Z
Z0Z0ZkZ0
0Z0J0Z0O
Z0Z0Z0ZP
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Gy. Neukomm, 1947
b
c
d
e
f
g
h
2457
8
7
6
5
4
3
2
1
0Z0Z0Z0M
Z0Z0Z0Z0
0Z0Z0O0Z
Z0Z0ZkZ0
0Z0J0Z0O
Z0Z0Z0ZP
QZ0Z0Z0Z
Z0Z0Z0Z0
a
Qa2
If KXf6, Qf7. If Kf4, Qf2.
b
c
d
e
f
g
h
2458
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0ZQ
0Z0Z0Z0Z
Z0Z0ZKZ0
0Z0Z0Z0Z
Z0ZkZ0Z0
0SNZ0Z0Z
Z0S0Z0Z0
a
Gy. Neukomm, 1924
b
c
d
e
f
g
h
2458
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
L0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0ZKZ0
0Z0Z0Z0Z
Z0ZkZ0Z0
0SNZ0Z0Z
Z0S0Z0Z0
a
b
c
d
Qa7
If Kc3 or Kc4, Qd4. If Kd2 or Ke2, Qe3.
e
f
g
h
2459
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
KZ0ZpZ0Z
Z0jpL0Z0
RZNZ0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
Gy. Neukomm - V. Onitiu, 1932
c
d
e
f
g
h
2459
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
KZ0ZQZ0Z
Z0jpZ0Z0
RZNZ0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
c
d
QXe6
If pXc4, RXc4. If pd4, Qd6. If Kd4, Qe3.
e
f
g
h
2460
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
o0Z0A0Z0
PZ0Z0Z0Z
LKZkZ0M0
a
b
Gy. Neukomm - V. Onitiu, 1929
c
d
e
f
g
h
2460
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
o0Z0Z0Z0
PZ0Z0A0Z
LKZkZ0M0
a
Bf2, Kd2
Qd4
b
c
d
e
f
g
h
2461
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0LK
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0M0Z
Z0Z0ZpZ0
0Z0Z0Z0Z
Z0Z0ZrAk
a
K. Nielsen, 1959
b
c
d
e
f
g
h
2461
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0LK
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0ZpZN
0Z0Z0Z0Z
Z0Z0ZrAk
a
b
c
d
e
f
g
h
Nh3
If pf2, Qb7. If RXg1, QXg1. If Rf2, NXf2. If Ra1-e1, Nf2.
2462
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0s
Z0ZpZ0Z0
0Z0Z0AQZ
Z0Z0Z0Zp
0Z0Z0Z0Z
Z0ZKZ0Zk
a
K. Nielsen, 1971
b
c
d
e
f
g
h
2462
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0s
Z0ZpZ0Z0
0Z0Z0ZQZ
Z0Z0A0Zp
0Z0Z0Z0Z
Z0ZKZ0Zk
a
Be3
If ph2, Qf3. If Rg6, QXh3.
Otherwise, Qg1.
b
c
d
e
f
g
h
2463
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
QZ0Z0JNj
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
A. Nieman, 1985
b
c
d
e
f
g
h
2463
8
7
6
5
4
3
2
1
0ZQZ0Z0Z
Z0Z0Z0Z0
0Z0Z0JNj
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Qc8
If Kh5, Qh3. If Kh7, Qh8.
b
c
d
e
f
g
h
2464
8
7
6
5
4
3
2
1
kZ0Z0Z0Z
Z0Z0Z0Sq
NZ0Z0Z0Z
Z0Z0Z0Z0
0Z0ZRZ0Z
Z0Z0ZBZ0
0ZKZ0Z0Z
Z0Z0Z0Z0
a
M. Niemeijer, 1971
b
c
d
e
f
g
h
2464
8
7
6
5
4
3
2
1
kZ0Z0Z0Z
Z0Z0Z0Sq
NZ0Z0Z0Z
Z0Z0Z0Z0
0Z0ZRZ0Z
ZKZ0ZBZ0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
c
d
e
Kb3
If Qg8+, Re6. If QXg7, Re7. If QXe4, BXe4.
Otherwise, Re8.
f
g
h
2465
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0ZRZ
Z0ZKakZB
0Z0Z0Z0Z
Z0ZNZ0Z0
0Z0ZNZ0Z
Z0Z0Z0Z0
a
M. Niemeijer, 1970
b
c
d
e
f
g
h
2465
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0ZRZ
Z0ZKakZB
0Z0Z0M0Z
Z0Z0Z0Z0
0Z0ZNZ0Z
Z0Z0Z0Z0
a
N(d3)f4
If BXf4, Nd4.
Otherwise, Bg4.
b
c
d
e
f
g
h
2466
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0ZQZ0Z0Z
Z0ZBZ0A0
0Z0Z0ZkZ
Z0Z0Z0ZN
0ZKZ0Z0Z
Z0Z0Z0Z0
a
A. E. Niemelä, 1976
b
c
d
e
f
g
h
2466
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0ZQZ0Z0Z
Z0Z0Z0A0
0Z0Z0ZkZ
Z0Z0Z0ZN
0ZKZ0Z0Z
Z0Z0Z0ZB
a
b
c
d
e
f
Bh1
If KXh3 or Kg3, Qg2. If Kf5, Qe4. If Kh5, Bf3.
g
h
2467
8
7
6
5
4
3
2
1
0J0jbZ0Z
Z0Z0Z0Zr
0Z0ZQZ0Z
M0ZPZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
K. Nikolov, 1962
b
c
d
e
f
g
h
2467
8
7
6
5
4
3
2
1
0J0jbZ0Z
Z0Z0Z0Zr
0Z0OQZ0Z
M0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
c
d
pd6
If Bd7, Nb7. If Rd7, Nc6. If Rc7, pXc7.
Oherwise, Qc8.
e
f
g
h
2468
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
ZpZ0Z0Z0
0S0Z0ZpL
Z0ZKZkZb
a
R. Nobre - G. Maritz, 1985
b
c
d
e
f
g
h
2468
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
ZpZ0Z0Z0
0S0Z0ZpL
Z0J0ZkZb
a
b
c
d
e
Kc1
If Ke1, Qg1. If pg1(Q), Qe2. If pg1(N), Qf2.
f
g
h
2469
8
7
6
5
4
3
2
1
0Z0Z0Z0A
Z0Z0Z0S0
0s0s0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
J0Z0Z0Z0
0Z0Z0Z0Z
j0Z0ZBZ0
a
R. Notaro, 1978
b
c
d
e
f
g
h
2469
8
7
6
5
4
3
2
1
0Z0Z0Z0A
Z0Z0Z0Z0
0s0s0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
J0Z0Z0Z0
0Z0Z0Z0Z
j0Z0ZBS0
a
b
c
Rg1+
If Kb1 or Rb2, Bd3. If Rd4, Bb5.
d
e
f
g
h
2470
8
7
6
5
4
3
2
1
0Z0Z0Z0S
Z0Z0Z0Z0
0Z0Z0s0o
Z0Z0Z0Zk
0Z0Z0Z0Z
Z0Z0Z0SK
0Z0Z0Z0Z
ZBZ0Z0Z0
a
R. Notaro, 1977
b
c
d
e
f
g
h
2470
8
7
6
5
4
3
2
1
0Z0Z0S0Z
Z0Z0Z0Z0
0Z0Z0s0o
Z0Z0Z0Zk
0Z0Z0Z0Z
Z0Z0Z0SK
0Z0Z0Z0Z
ZBZ0Z0Z0
a
b
c
d
e
f
g
h
Rf8
If RXf8 or Rf7 or Rf1-f4, Bg6. If Rf5, RXf5. If Ra6-e6, Rf5. If Rg6, BXg6.
2471
8
7
6
5
4
3
2
1
kZ0Z0Z0Z
ZRZrZ0Z0
KANa0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
C. E. Nylund, 1944
b
c
d
e
f
g
h
2471
8
7
6
5
4
3
2
1
kZ0Z0Z0Z
ZRArZ0Z0
KZNa0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Bc7
If RXc7 or Bc5, Rb8.
Otherwise, Ra7.
b
c
d
e
f
g
h
2472
8
7
6
5
4
3
2
1
0A0ZBZ0Z
Z0Z0Z0Z0
0Z0Z0Z0L
Z0Z0Z0Z0
0Z0ZkZ0M
M0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0ZKZ0
a
T. Nylund, 1967
b
c
d
e
f
g
h
2472
8
7
6
5
4
3
2
1
0A0ZBZ0Z
Z0Z0Z0Z0
0Z0Z0Z0L
Z0Z0ZNZ0
0Z0ZkZ0Z
M0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0ZKZ0
a
b
c
d
e
f
g
Nf5
If KXf5, Qg6. If Kd3, Qe3. If Kd5, Qc6. If Kf3, Qf4.
h
2473
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0ZNZ0Z0
0Z0J0Z0Z
Z0S0Z0Z0
0Z0Z0Z0Z
Z0Zko0Z0
bL0Z0Z0Z
Z0Z0Z0Z0
a
J. Oehquist, 1902
b
c
d
e
f
g
h
2473
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0ZNZ0Z0
0Z0J0Z0Z
Z0Z0Z0Z0
0ZRZ0Z0Z
Z0Zko0Z0
bL0Z0Z0Z
Z0Z0Z0Z0
a
Rc4
If BXc4, Nc5. If pe2, Qd4.
Otherwise, Ne5.
b
c
d
e
f
g
h
2474
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0L0Z0Z0Z
Z0ZkZBZ0
0Z0Z0Z0Z
Z0J0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
J. Oehquist, 1889
b
c
d
e
f
g
h
2474
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0L0Z0Z0Z
Z0ZkZ0Z0
0Z0Z0ZBZ
Z0J0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Bg4, Ke4 or Ke5
Qd4
b
c
d
e
f
g
h
2475
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0ZQZ0J0j
Z0Z0ZpZ0
0Z0Z0Z0Z
Z0Z0Z0Zp
0Z0Z0Z0s
Z0Z0Z0ZR
a
A. G. Ojanen, 1942
b
c
d
e
f
g
h
2475
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0J0j
Z0Z0ZpZ0
0Z0Z0Z0Z
Z0Z0Z0Zp
0Z0Z0ZQs
Z0Z0Z0ZR
a
b
c
d
e
f
g
h
Qg2
If pXg2, RXh2. If RXg2, RXh3. If Kh7, Qg7. If Kh5, Qg5.
If RXh1 or pf4, Qg6.
2476
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0ZB
0Z0ZQJ0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
o0Z0Z0Z0
pj0O0Z0Z
Z0Z0Z0Z0
a
A. G. Ojanen, 1942
b
c
d
e
f
g
h
2476
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0ZB
0Z0Z0J0Z
Z0Z0ZQZ0
0Z0Z0Z0Z
o0Z0Z0Z0
pj0O0Z0Z
Z0Z0Z0Z0
a
b
c
d
e
f
g
h
Qf6
If pa1(Q) or Kc1, Qc2. If pa1(N), Qb1. If Ka1, Qe5. If Kb3, Qb5.
2477
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
l0Z0Z0Z0
0Z0Z0Z0Z
j0M0S0Z0
NZQZ0Z0Z
Z0Z0J0Z0
a
T. Oksala, 1954
b
c
d
e
f
g
h
2477
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
l0Z0Z0Z0
0Z0Z0Z0Z
j0M0S0Z0
NZQZ0Z0Z
Z0ZKZ0Z0
a
b
c
d
e
f
g
h
Kd1
If Qh5+, Ne2. If Qd8+, Nd5. If Qd5+, NXd5. If QXc3, RXc3.
Otherwise, Nb1.
2478
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0ZPZPZP
0Z0ZkZ0Z
Z0Z0Z0Z0
0Z0Z0J0Z
Z0ZQZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
A. E. van Ommeren, 1915
b
c
d
e
f
g
h
2478
8
7
6
5
4
3
2
1
0Z0Z0A0Z
Z0ZPZ0ZP
0Z0ZkZ0Z
Z0Z0Z0Z0
0Z0Z0J0Z
Z0ZQZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
pf8(B), Kf6 or Kf7
Qf5
b
c
d
e
f
g
h
2479
8
7
6
5
4
3
2
1
0Z0Z0ZRZ
Z0Z0Z0Zp
0Z0J0ZnL
Z0Z0ZkZ0
0Z0Z0Z0Z
Z0Z0ZPZ0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
V. Onitiu, 1927
b
c
d
e
f
g
h
2479
8
7
6
5
4
3
2
1
0Z0ZRZ0Z
Z0Z0Z0Zp
0Z0J0ZnL
Z0Z0ZkZ0
0Z0Z0Z0Z
Z0Z0ZPZ0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
c
d
Re8
If Nh8, Re5. If Ne5, RXe5. If Nf8, RXf8.
Otherwise, Rf8.
e
f
g
h
2480
8
7
6
5
4
3
2
1
0Z0m0Z0Z
ZpZ0LnZ0
0J0Z0Z0Z
Z0ZkZ0Z0
0Z0ZRZ0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
V. Onitiu, 1930
b
c
d
e
f
g
h
2480
8
7
6
5
4
3
2
1
0Z0mQZ0Z
ZpZ0ZnZ0
0J0Z0Z0Z
Z0ZkZ0Z0
0Z0ZRZ0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
c
d
Qe8
If Kd6, Rd4. If Nc6, Qe6. If Ne6, QXe6.
If Ne5, QXe5. Otherwise, Qe5.
e
f
g
h
2481
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Jp
0Z0Z0ZbS
Z0Z0ZkZ0
0Z0Z0Z0Z
Z0Z0L0Z0
0Z0Z0Z0M
Z0Z0Z0Z0
a
V. Onitiu, 1930
b
c
d
e
f
g
h
2481
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Jp
0Z0Z0ZbZ
Z0Z0ZkZ0
0Z0Z0Z0Z
Z0Z0L0ZR
0Z0Z0Z0M
Z0Z0Z0Z0
a
Rh3
If Bh5, RXh5.
Otherwise, Rf3.
b
c
d
e
f
g
h
2482
8
7
6
5
4
3
2
1
bL0ZNZ0Z
ZnZ0Z0Z0
0j0Z0Z0Z
Z0Z0Z0Z0
0JBZ0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
V. Onitiu, 1930
b
c
d
e
f
g
h
2482
8
7
6
5
4
3
2
1
bL0ZNZ0Z
ZnZ0Z0Z0
0j0Z0Z0Z
Z0Z0Z0Z0
0ZBZ0Z0Z
Z0J0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
c
Kc3
If Ka5, Qa7. If Kc5 or Kc6, Qc7.
d
e
f
g
h
2483
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
ZNZ0Z0Z0
0Z0OkZPJ
Z0Z0M0Z0
0Z0ZQZ0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
V. Onitiu, 1930
b
c
d
e
f
g
h
2483
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
ZNZ0Z0Z0
0Z0OkZPJ
Z0Z0Z0Z0
0ZNZQZ0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Nc4+
If Kd7, Nb6. If Kf6, Qe5.
b
c
d
e
f
g
h
2484
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0ZBZ0Z
Z0m0Z0Z0
0Z0ZkZ0Z
Z0Z0Z0Ln
0ZKZ0Z0A
Z0Z0Z0Z0
a
V. Onitiu, 1930
b
c
d
e
f
g
h
2484
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0ZBZ0
0Z0Z0Z0Z
Z0m0Z0Z0
0Z0ZkZ0Z
Z0Z0Z0Ln
0ZKZ0Z0A
Z0Z0Z0Z0
a
b
c
d
e
f
g
h
Bf7
If Kd4, Qe5. If Kf5, Qg6. If Nf4, QXf4. If Ng1 or Nf2 or Ng5, Qf4.
If Nd3, QXd3. Otherwise, Qd3.
2485
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0o0
0Z0Z0ZKZ
Z0Z0Z0Zp
0Z0Z0ZkM
Z0Z0Z0Zp
0Z0Z0Z0L
Z0Z0Z0Z0
a
V. Onitiu, 1930
b
c
d
e
f
g
h
2485
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0J0
0Z0Z0Z0Z
Z0Z0Z0Zp
0Z0Z0ZkM
Z0Z0Z0Zp
0Z0Z0Z0L
Z0Z0Z0Z0
a
KXg7
If KXh4, Qf4. If Kg5, Qg3.
b
c
d
e
f
g
h
2486
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0oNZ0Z0
KZBjbL0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
V. Onitiu, 1930
b
c
d
e
f
g
h
2486
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0oNZ0Z0
KZBjbZ0L
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Qh4
If KXc4, QXe4. If Ke5, Qf6.
b
c
d
e
f
g
h
2487
8
7
6
5
4
3
2
1
0Z0ZkZ0Z
Z0ZNO0J0
0Z0ZRZ0Z
Z0M0Z0Z0
0Z0Z0ZnZ
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
V. Onitiu, 1931
b
c
d
e
f
g
h
2487
8
7
6
5
4
3
2
1
0Z0ZkZ0Z
Z0ZNO0J0
NZ0ZRZ0Z
Z0Z0Z0Z0
0Z0Z0ZnZ
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
Na6
If KXd7, pe8(Q)
If Nf6, NXf6. Otherwise, Nf6.
c
d
e
f
g
h
2488
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0o0Z0
0Z0ZQZ0Z
ZkZ0Z0Z0
0Z0ZpZ0Z
ZNJ0M0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
V. Onitiu, 1932
b
c
d
e
f
g
h
2488
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0o0Z0
0Z0ZQZ0Z
ZkZ0Z0Z0
0Z0ZpZ0Z
ZNZ0M0Z0
0J0Z0Z0Z
Z0Z0Z0Z0
a
Kb2, Ka4 or Kb4
Qc4
b
c
d
e
f
g
h
2489
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0ZQZ0Z0
0Z0Z0Z0Z
Z0o0Z0Z0
RakZ0Z0Z
Z0Z0Z0Z0
0mKZ0Z0Z
Z0Z0Z0Z0
a
V. Onitiu, 1932
b
c
d
e
f
g
h
2489
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0L0Z0Z
Z0o0Z0Z0
RakZ0Z0Z
Z0Z0Z0Z0
0mKZ0Z0Z
Z0Z0Z0Z0
a
b
c
d
e
f
g
Qd6
If Kb5, Qa6. If NXa4 or Nd1, Qd3. If Nd3, QXd3.
h
2490
8
7
6
5
4
3
2
1
0S0Z0Z0Z
Z0Z0Z0Z0
0OkZKZ0Z
Z0a0Z0Z0
0oQZ0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
V. Onitiu, 1932
b
c
d
e
f
g
h
2490
8
7
6
5
4
3
2
1
0S0Z0Z0Z
Z0Z0Z0Z0
0OkZ0Z0Z
Z0a0J0Z0
0oQZ0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Ke5
If Kd7, Qe6. If pb3, Qa4.
b
c
d
e
f
g
h
2491
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0ZpZ0Z
Z0Z0J0Z0
0o0Z0Z0Z
Zpj0Z0Z0
0Z0ZQZ0Z
Z0Z0ZBZ0
a
V. Onitiu, 1932
b
c
d
e
f
g
h
2491
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0ZKZ0Z
Z0Z0Z0Z0
0o0Z0Z0Z
Zpj0Z0Z0
0Z0ZQZ0Z
Z0Z0ZBZ0
a
KXe6
If Kd4, Qe5. If pb2, Qd3.
b
c
d
e
f
g
h
2492
8
7
6
5
4
3
2
1
NZ0Z0Z0Z
Z0Z0Z0Z0
PZkZKZ0Z
Z0o0Z0Z0
0aQZ0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
V. Onitiu, 1932
b
c
d
e
f
g
h
2492
8
7
6
5
4
3
2
1
NZ0Z0Z0Z
Z0Z0Z0Z0
PZkZKZ0Z
Z0o0Z0Z0
0a0Z0Z0Z
Z0ZQZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
Qd3
If pd4, Qd5.
Otherwise, Qd7.
b
c
d
e
f
g
h
2493
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0L0Z0Z
ZNZbZ0Z0
BZkZ0Z0Z
Z0Z0J0Z0
a
V. Onitiu, 1932
b
c
d
e
f
g
h
2493
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0L0Z0Z
ZNZbZ0Z0
BZkZ0J0Z
Z0Z0Z0Z0
a
Kf2
If Kd1, QXd3.
Otherwise, Qd2.
b
c
d
e
f
g
h
2494
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0o0Z0Z0Z
ZKZ0Z0Z0
0Z0ZNZPZ
Z0ZkZ0Z0
0Z0Z0L0Z
Z0Z0Z0A0
a
V. Onitiu, 1932
b
c
d
e
f
g
h
2494
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0o0Z0Z0Z
Z0Z0Z0Z0
0J0ZNZPZ
Z0ZkZ0Z0
0Z0Z0L0Z
Z0Z0Z0A0
a
Kb4
If KXe4, Qf5. If pb5, Nc5.
b
c
d
e
f
g
h
2495
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0Z0A0Z0Z
Z0ZBZ0Z0
0ZPj0Z0Z
Z0Z0Z0Z0
0ZKZ0S0Z
Z0Z0Z0Z0
a
V. Onitiu, 1932
b
c
d
e
f
g
h
2495
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0Z0
0ZBA0Z0Z
Z0Z0Z0Z0
0ZPj0Z0Z
Z0Z0Z0Z0
0ZKZ0S0Z
Z0Z0Z0Z0
a
Bc6
If KXc4, Rf4. If Ke3, Bc5.
b
c
d
e
f
g
h
2496
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0o0
0Z0Z0ZBZ
Z0J0Z0Z0
0Z0Z0ZNZ
Z0Z0Z0Z0
PZ0j0Z0Z
Z0Z0ZQZ0
a
V. Onitiu, 1932
b
c
d
e
f
g
h
2496
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0Z0o0
0Z0Z0ZBZ
Z0J0M0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
PZ0j0Z0Z
Z0Z0ZQZ0
a
Ne5
If Kc3, Qc1. If Ke3, Nc4.
b
c
d
e
f
g
h
2497
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0ZKZ0
0Z0Z0Z0Z
Z0Z0okZ0
0Z0Z0O0Z
Z0Z0ZQZP
0Z0Z0O0Z
Z0Z0Z0Z0
a
V. Onitiu, 1926
b
c
d
e
f
g
h
2497
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0Z0ZKZ0
0Z0Z0Z0Z
Z0Z0okZ0
0Z0Z0O0Z
Z0Z0Z0ZP
0Z0Z0OQZ
Z0Z0Z0Z0
a
b
c
d
Qg2
If KXf4, Qg4. If pXf4, Qd5. If pe4, Qg5.
e
f
g
h
2498
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
ZKZ0Z0Z0
0Z0Z0Z0Z
Zko0Z0Z0
NZ0Z0Z0Z
L0Z0Z0Z0
0ZPZ0Z0Z
Z0Z0Z0Z0
a
V. Onitiu, 1926
b
c
d
e
f
g
h
2498
8
7
6
5
4
3
2
1
0Z0Z0Z0Z
Z0J0Z0Z0
0Z0Z0Z0Z
Zko0Z0Z0
NZ0Z0Z0Z
L0Z0Z0Z0
0ZPZ0Z0Z
Z0Z0Z0Z0
a
b
c
d
e
Kc7
If pc4 or Ka5 or Ka6, Nc3. If Kc4, QXc5.
f
g
h
2499
8
7
6
5
4
3
2
1
0Z0Z0ZRZ
Z0Z0Z0Z0
0Z0Z0ZPj
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0S0
0Z0Z0ZpZ
Z0Z0Z0Jb
a
V. Onitiu, 1926
b
c
d
e
f
g
h
2499
8
7
6
5
4
3
2
1
0Z0Z0ZRZ
Z0Z0Z0O0
0Z0Z0Z0j
Z0Z0Z0Z0
0Z0Z0Z0Z
Z0Z0Z0S0
0Z0Z0ZpZ
Z0Z0Z0Jb
a
pg7, Kh7 or Kh5
Rh8
b
c
d
e
f
g
h
2500
8
7
6
5
4
3
2
1
0m0Z0Z0Z
ZQZ0Z0Z0
0ZrZ0Z0Z
Z0ZkZ0Z0
0ZNM0Z0Z
Z0ZKZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
V. Onitiu, 1926
b
c
d
e
f
g
h
2500
8
7
6
5
4
3
2
1
Qm0Z0Z0Z
Z0Z0Z0Z0
0ZrZ0Z0Z
Z0ZkZ0Z0
0ZNM0Z0Z
Z0ZKZ0Z0
0Z0Z0Z0Z
Z0Z0Z0Z0
a
b
c
Qa8
If Kc5, Qa5. If Na6 or Nd7, QXc6.
d
e
f
g
h