MESON Chess Problem Database
Problem Display
PID: 199471 (3Q4/2B3pr/4p3/3p3P/N1Bk2K1/1P2p1N1/4pb2/6n1 w - - 0 1)
Holroyd, GC
The Observer, 1945
(First published on Sun Aug 5 1945)
#2
8 + 9
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...e5
- 2.Bb6#
- 2.Qxd5#
- 1...e5
- Tries
- 1.Sxe2+?
- 1...Ke4
- 2.Sac3#
- 2.Sc5#
- 1...Sxe2!
- 1...Ke4
- 1.Sf5+?
- 1...Ke4
- 2.Sc3#
- 2.Sc5#
- 1...exf5+!
- 1...Ke4
- 1.Bd6?
- threat
- 2.Qb6#
- 1...dxc4
- 2.Bf4#
- 2.Bc7#
- 2.Bb8#
- 1...Bxg3!
- threat
- 1.Qg5?
- threat
- 2.Be5#
- 2.Bb6#
- 2.Qf4#
- 2.Qe5#
- 1...Rxh5
- 2.Be5#
- 2.Bb6#
- 2.Qf4#
- 1...dxc4
- 2.Qd8#
- 1...Sf3
- 2.Bb6#
- 2.Qf4#
- 1...Sh3
- 2.Be5#
- 2.Bb6#
- 2.Qe5#
- 1...e5
- 2.Bxe5#
- 2.Bb6#
- 2.Qxe5#
- 1...Bxg3!
- threat
- 1.Qf6+?
- 1...e5
- 2.Bxe5#
- 2.Bb6#
- 2.Qxe5#
- 2.Qb6#
- 1...gxf6!
- 1...e5
- 1.Qe7?
- threat
- 2.Qc5#
- 1...dxc4
- 2.Qd6#
- 2.Qd8#
- 2.Qd7#
- 1...Bxg3!
- threat
- 1.Qd6?
- threat
- 2.Bb6#
- 2.Qf4#
- 2.Qc5#
- 2.Qe5#
- 2.Qb6#
- 1...Rxh5
- 2.Bb6#
- 2.Qf4#
- 2.Qc5#
- 2.Qb6#
- 1...Sf3
- 2.Bb6#
- 2.Qf4#
- 2.Qc5#
- 2.Qb6#
- 1...Sh3
- 2.Bb6#
- 2.Qc5#
- 2.Qe5#
- 2.Qb6#
- 1...e5
- 2.Bb6#
- 2.Qc5#
- 2.Qxe5#
- 2.Qxd5#
- 2.Qb6#
- 1...g5
- 2.Bb6#
- 2.Qc5#
- 2.Qe5#
- 2.Qb6#
- 1...Bxg3!
- threat
- 1.Qa8?
- threat
- 2.Qa7#
- 1...dxc4
- 2.Qe4#
- 2.Qd8#
- 1...Bxg3!
- threat
- 1.Qb8?
- threat
- 2.Be5#
- 2.Bb6#
- 2.Qa7#
- 2.Qb6#
- 1...Rxh5
- 2.Bb6#
- 2.Qa7#
- 2.Qb6#
- 1...dxc4
- 2.Qd8#
- 1...Sf3
- 2.Bb6#
- 2.Qa7#
- 2.Qb6#
- 1...e5
- 2.Bxe5#
- 2.Bb6#
- 2.Qa7#
- 2.Qb6#
- 1...Bxg3!
- threat
- 1.Qf8?
- threat
- 2.Qc5#
- 2.Qf4#
- 1...dxc4
- 2.Qd6#
- 2.Qd8#
- 1...Sh3
- 2.Qc5#
- 1...e5
- 2.Bb6#
- 2.Qc5#
- 1...g5
- 2.Qc5#
- 1...Bxg3!
- threat
- 1.Sxe2+?
- Keys
- 1.Qh4!
- threat
- 2.Kg5#
- 1...Rxh5
- 2.Kxh5#
- 1...Bxg3
- 2.Kxg3#
- 1...dxc4
- 2.Qd8#
- 1...Sf3
- 2.Kxf3#
- 1...Sh3
- 2.Kxh3#
- 1...e5
- 2.Bb6#
- 1...g5
- 2.Kxg5#
- threat
- 1.Qh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(B);CHECK,XP(b)
- Refutation
- S(a);XS(B)
- Try
- S(B);CHECK
- Refutation
- P(g);CHECK,XS(B)
- Try
- B(G);N_PINP(f)
- Threat
- QAB(H)
- Refutation
- B(c);XS(B)
- Try
- Q(H);N_PINP(f)
- Threat
- DUALS(4)
- Vars
- P(f);OGATEB,XB(D)::QAR(H)
- Refutation
- B(c);XS(B)
- Try
- Q(H);CHECK,N_PINP(f)
- Refutation
- P(h);XQ(H)
- Try
- Q(H);N_PINP(f)
- Threat
- QAB1(H)
- Refutation
- B(c);XS(B)
- Try
- Q(H);
- Threat
- DUALS(5)
- Refutation
- B(c);XS(B)
- Try
- Q(H);N_PINP(f)
- Threat
- QAB(H)
- Refutation
- B(c);XS(B)
- Try
- Q(H);N_PINP(f)
- Threat
- DUALS(4)
- Vars
- P(f);OGATEB,XB(D)::QAR(H)
- Refutation
- B(c);XS(B)
- Try
- Q(H);N_PINP(f)
- Threat
- DUALS(2)
- Vars
- S(a);::QAB1(H)
- P(h);::QAB1(H)
- Refutation
- B(c);XS(B)
- Try
- Actual
- Q(H);N_PINP(f)
- Threat
- QAR(H)+K(E)
- Vars
- R(i);XP(F)::QAR(H)+K(E),XR(i)
- B(c);XS(B)::QAR(H)+K(E),XB(c)
- P(f);OGATEB,XB(D)::QAR(H)
- S(a);::QAR(H)+K(E),XS(a)
- P(g);SBLOCK::B(G)
- P(h);::QAR(H)+K(E),XP(h)
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