MESON Chess Problem Database
Problem Display
PID: 253334 (1Q3K2/3p4/4kp2/R2Nb2P/8/3P2P1/B7/2B5 w - - 0 1)
Fothergill, Percival Guy Laugham (PGLF)
The Field, 1912
(First published on Sat Jan 27 1912)
#2
9 + 4
| 15239 | Valois Notebooks | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.Sf4#
- 1...Bb2
- 2.Sf4#
- 1...Bc3
- 2.Sf4#
- 1...Bxg3
- 2.Sf4#
- 1...Bd4
- 2.Sf4#
- 1...Bf4
- 2.Sxf4#
- 1...Bd6+
- 2.Se7#
- 1...d6
- 2.Qc8#
- 1...Ba1
- Tries
- 1.Sxf6+?
- 1...Kf5
- 2.Qxe5#
- 1...Kxf6
- 2.Qxe5#
- 1...d5!
- 1...Kf5
- 1.Sc7+?
- 1...Kd6
- 2.Qb6#
- 1...Kf5!
- 1...Kd6
- 1.Ba3?
- 1...Bd6+
- 2.Se7#
- 1...Bxg3
- 2.Sf4#
- 2.Sc7#
- 1...Bxb8
- 2.Sf4#
- 2.Sc7#
- 1...Bc7
- 2.Sf4#
- 2.Sxc7#
- 1...d6
- 2.Qc8#
- 1...Ba1
- 2.Sf4#
- 2.Sc7#
- 1...Bb2
- 2.Sf4#
- 2.Sc7#
- 1...Bc3
- 2.Sf4#
- 2.Sc7#
- 1...Bd4
- 2.Sf4#
- 2.Sc7#
- 1...Bf4
- 2.Sxf4#
- 2.Sc7#
- 1...f5
- 2.Qe8#
- 1...Kf5!
- 1...Bd6+
- 1.Qd6+?
- 1...Kf5
- 2.Qxd7#
- 1...Bxd6+
- 2.Se7#
- 1...Kxd6!
- 1...Kf5
- 1.Qb4?
- 1...Bd6+
- 2.Se7#
- 1...Kf5
- 2.Se7#
- 1...Bxg3
- 2.Sf4#
- 2.Sc7#
- 1...Ba1
- 2.Sf4#
- 2.Sc7#
- 1...Bb2
- 2.Sf4#
- 2.Sc7#
- 1...Bc3
- 2.Sf4#
- 2.Sc7#
- 1...Bd4
- 2.Sf4#
- 2.Sc7#
- 1...Bf4
- 2.Sxf4#
- 2.Sc7#
- 1...Bc7
- 2.Sf4#
- 2.Sxc7#
- 1...Bb8
- 2.Sf4#
- 2.Sc7#
- 1...f5
- 2.Qe7#
- 1...d6!
- 1...Bd6+
- 1.Qe8+?
- 1...Kf5
- 2.Qxd7#
- 1...Kd6!
- 1...Kf5
- 1.Sxf6+?
- Keys
- 1.Bf4!
- 1...Bd6+
- 2.Se7#
- 1...Kf5
- 2.Se3#
- 1...Bxf4
- 2.Sxf4#
- 1...Bxb8
- 2.Sc7#
- 1...d6
- 2.Qc8#
- 1...Ba1
- 2.Sc7#
- 1...Bb2
- 2.Sc7#
- 1...Bc3
- 2.Sc7#
- 1...Bd4
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 1...f5
- 2.Qxe5#
- 1...Bd6+
- 1.Bf4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- B(a);::B(B)+S(F),DCHECK
- B(a);XP(D)::B(B)+S(F),DCHECK
- B(a);::B(B)+S(F),DCHECK,XB(a)
- B(a);CHECK,S_CUTP(d)::B(B)+S(F)
- P(d);OGATEB,SBLOCK::QAB(H)
- Tries
- Try
- S(F);CHECK,XP(c)
- Vars
- K(b);P_SPINB(a),S_FLIGHT::QAR1(H),XB(a)
- K(b);P-FLIGHT,XS(F)::QAB1(H),XB(a)
- Refutation
- P(d);P_SPINP(d)
- Try
- S(F);CHECK
- Vars
- K(b);N_GUARD,P-FLIGHT::QAR2(H)
- Refutation
- K(b);P_SPINB(a),S_FLIGHT
- Try
- B(A);
- Vars
- B(a);CHECK,S_CUTP(d)::B(B)+S(F)
- P(d);OGATEB::QAB(H)
- P(c);SBLOCK::QAR2(H)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(H);CHECK
- Vars
- K(b);N_GUARD,S_FLIGHT::QAB(H),XP(d)
- B(a);CHECK,SBLOCK,XQ(H)::B(B)+S(F)
- Refutation
- K(b);P-FLIGHT,XQ(H)
- Try
- Q(H);
- Vars
- B(a);CHECK,S_CUTP(d)::B(B)+S(F)
- K(b);S_CUTP(d),S_FLIGHT::S(F)
- P(c);SBLOCK::QAR1(H)
- Refutation
- P(d);
- Try
- Q(H);CHECK
- Vars
- K(b);N_GUARD,S_FLIGHT::QAB(H),XP(d)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- B(A);
- Vars
- B(a);CHECK,S_CUTP(d)::B(B)+S(F)
- K(b);S_CUTP(d),S_FLIGHT::S(F)
- B(a);XB(A)::B(B)+S(F),DCHECK,XB(a)
- B(a);XQ(H)::B(B)+S(F),DCHECK
- P(d);OGATEB,SBLOCK::QAB(H)
- B(a);::B(B)+S(F),DCHECK
- B(a);::B(B)+S(F),DCHECK,XB(a)
- P(c);N_GUARD::QAR1(H),XB(a)
Developed and maintained by Brian Stephenson.
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