MESON Chess Problem Database
Problem Display
PID: 216267 (3N4/3p3p/5QnR/3kp3/3P2P1/4P3/3K4/5B2 w - - 0 1)
Robertson, George T
Philadelphia Times, 1882
#2
8 + 5
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ke4
- 2.Bg2#
- 1...Sf4
- 2.Qxe5#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...exd4
- 2.Qxd4#
- 1...Ke4
- Tries
- 1.Bd3?
- 1...exd4
- 2.Qxd4#
- 1...Sf4
- 2.Qxe5#
- 2.Qd6#
- 1...Sh4
- 2.Qxe5#
- 2.Qd6#
- 2.Qf7#
- 1...Se7
- 2.Qxe5#
- 2.Qd6#
- 2.Qf7#
- 1...Sf8
- 2.Qxe5#
- 2.Qd6#
- 1...Sh8
- 2.Qxe5#
- 2.Qd6#
- 1...d6
- 2.Qe6#
- 2.Qf7#
- 1...e4!
- 1...exd4
- 1.Bc4+?
- 1...Ke4
- 2.Qf5#
- 1...Kxc4!
- 1...Ke4
- 1.Rh5?
- 1...Ke4
- 2.Bg2#
- 1...Sf4
- 2.Rxe5#
- 2.Qxe5#
- 1...Sh4
- 2.Rxe5#
- 2.Qxe5#
- 1...Se7
- 2.Rxe5#
- 2.Qxe5#
- 1...Sf8
- 2.Rxe5#
- 2.Qxe5#
- 1...Sh8
- 2.Rxe5#
- 2.Qxe5#
- 1...d6
- 2.Qf3#
- 1...h6!
- 1...Ke4
- 1.Rxg6?
- threat
- 2.Qxe5#
- 1...Ke4
- 2.Bg2#
- 1...exd4
- 2.Qxd4#
- 2.Qf5#
- 1...e4
- 2.Rg5#
- 2.Qe5#
- 2.Qg5#
- 2.Qf5#
- 2.Qd6#
- 2.Qf7#
- 1...d6!
- threat
- 1.Rxh7?
- 1...Ke4
- 2.Bg2#
- 1...exd4
- 2.Qxd4#
- 1...e4
- 2.Rxd7#
- 1...Sf4
- 2.Qxe5#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...d6!
- 1...Ke4
- 1.Qg5?
- 1...Ke4
- 2.Bg2#
- 1...Kd6
- 2.Qxe5#
- 1...Sf4
- 2.Qxe5#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...d6!
- 1...Ke4
- 1.Qe7?
- 1...Ke4
- 2.Bg2#
- 1...exd4
- 2.e4#
- 1...e4
- 2.Qc5#
- 2.Qxd7#
- 1...Sf4
- 2.Qxe5#
- 1...Sh4
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...d6
- 2.Qb7#
- 1...Sxe7!
- 1...Ke4
- 1.Qf5?
- 1...Kd6
- 2.Qxe5#
- 1...Sf4
- 2.Qxe5#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...d6!
- 1...Kd6
- 1.Qb6?
- 1...Ke4
- 2.Bg2#
- 1...exd4
- 2.Qxd4#
- 1...e4
- 2.Qc5#
- 1...Sf4
- 2.Qb7#
- 1...Sh4
- 2.Qb7#
- 1...Sf8
- 2.Qb7#
- 1...Sh8
- 2.Qb7#
- 1...d6
- 2.Qc6#
- 2.Qb7#
- 1...Se7!
- 1...Ke4
- 1.Qd6+?
- 1...Ke4
- 2.Bg2#
- 1...Kxd6!
- 1...Ke4
- 1.Qe6+?
- 1...Ke4
- 2.Bg2#
- 1...dxe6!
- 1...Ke4
- 1.Qf7+?
- 1...Ke4
- 2.Bg2#
- 2.Bd3#
- 1...Kd6!
- 1...Ke4
- 1.Bd3?
- Keys
- 1.Qg7!
- 1...Ke4
- 2.Bg2#
- 1...Kd6
- 2.Qxe5#
- 1...exd4
- 2.Qxd4#
- 1...e4
- 2.Qxd7#
- 1...Sf4
- 2.Qxe5#
- 1...Sh4
- 2.Qxe5#
- 1...Se7
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...d6
- 2.Qb7#
- 1...Ke4
- 1.Qg7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- K(a);S_FLIGHT::B(A)
- S(c);N_GUARD::QAR1(F),XP(b)
- P(b);OGATE,XP(D)::QAR1(F),XP(b)
- Tries
- Try
- B(A);
- Vars
- P(b);OGATE,XP(D)::QAR1(F),XP(b)
- Refutation
- P(b);
- Try
- B(A);CHECK
- Vars
- K(a);S_FLIGHT::QAB1(F)
- Refutation
- K(a);S_FLIGHT,XB(A)
- Try
- R(G);P_PINP(b)
- Vars
- K(a);N_SPINP(b),S_FLIGHT::B(A)
- P(d);SBLOCK::QAB(F)
- Refutation
- P(e);
- Try
- R(G);XS(c)
- Threat
- QAR1(F),XP(b)
- Vars
- K(a);S_FLIGHT::B(A)
- Refutation
- P(d);
- Try
- R(G);XP(e)
- Vars
- K(a);S_FLIGHT::B(A)
- P(b);OGATE,XP(D)::QAR1(F),XP(b)
- P(b);SBLOCK::R(G),XP(d)
- S(c);N_GUARD::QAR1(F),XP(b)
- Refutation
- P(d);
- Try
- Q(F);P_PINP(b)
- Vars
- K(a);N_SPINP(b),S_FLIGHT::B(A)
- K(a);N_SPINP(b),P-FLIGHT,P_SPINS(c)::QAB1(F),XP(b)
- S(c);N_GUARD::QAR1(F),XP(b)
- Refutation
- P(d);
- Try
- Q(F);
- Vars
- K(a);P_SPINP(b),S_FLIGHT::B(A)
- P(b);SBLOCK,XP(D)::P(C)
- S(c);N_GUARD::QAR1(F),XP(b)
- P(d);OGATE,SBLOCK::QAB(F)
- Refutation
- S(c);XQ(F)
- Try
- Q(F);P_PINP(b)
- Vars
- K(a);N_SPINP(b),P-FLIGHT,P_SPINS(c)::QAB1(F),XP(b)
- S(c);N_GUARD::QAR1(F),XP(b)
- Refutation
- P(d);
- Try
- Q(F);
- Vars
- K(a);S_FLIGHT::B(A)
- P(b);OGATE,XP(D)::QAR1(F),XP(b)
- P(b);SBLOCK::QAR1(F)
- S(c);::QAB(F)
- Refutation
- S(c);
- Try
- Q(F);CHECK
- Vars
- K(a);S_FLIGHT::B(A)
- Refutation
- K(a);P-FLIGHT,P_SPINS(c),XQ(F)
- Try
- Q(F);CHECK
- Vars
- K(a);P_SPINP(b),S_FLIGHT::B(A)
- Refutation
- P(d);XQ(F)
- Try
- Q(F);CHECK
- Refutation
- K(a);P-FLIGHT,P_SPINS(c)
- Try
- Actual
- Q(F);
- Vars
- K(a);S_FLIGHT::B(A)
- K(a);P-FLIGHT,P_SPINS(c)::QAB1(F),XP(b)
- P(b);OGATE,XP(D)::QAR1(F),XP(b)
- P(b);SBLOCK::QAR2(F),XP(d)
- S(c);N_GUARD::QAR1(F),XP(b)
- P(d);OGATE,SBLOCK::QAB(F)
Developed and maintained by Brian Stephenson.
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