MESON Chess Problem Database
Problem Display
PID: 21471 (4b3/3kpn1R/2RB1P2/2K5/6r1/7B/8/6Q1 w - - 0 1)
Mansfield, Comins
Good Companions, 1919
#2
7 + 5
| 3202 | Complete Mansfield/I | 1996 |
SOLUTION
- SOUND
- Sets
- 1...Sd8
- 2.Rxe7#
- 1...Sd8
- Tries
- 1.Bxg4+?
- 1...Kd8
- 2.Bc7#
- 2.Bxe7#
- 2.Rc8#
- 2.fxe7#
- 1...e6!
- 1...Kd8
- 1.Bxe7?
- threat
- 2.Bxg4#
- 2.Qxg4#
- 1...Se5
- 2.Qd4#
- 1...Sg5
- 2.Qd4#
- 2.Qd1#
- 1...Sh6
- 2.Qd4#
- 2.Qd1#
- 1...Sd8
- 2.Qd4#
- 2.Qd1#
- 1...Sd6!
- threat
- 1.Rc7+?
- 1...Kd8
- 2.fxe7#
- 1...Ke6!
- 1...Kd8
- 1.Qd1?
- 1...exd6+
- 2.Qxd6#
- 1...Kd8
- 2.Bxe7#
- 1...Sxd6
- 2.Qxd6#
- 1...exf6
- 2.Bf8#
- 1...Se5
- 2.Bxe5#
- 1...Sg5
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Bxe7#
- 2.Bb8#
- 1...Sh6
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Bxe7#
- 2.Bb8#
- 1...Sd8
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Bxe7#
- 2.Bb8#
- 2.Rxe7#
- 1...Sh8
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Bxe7#
- 2.Bb8#
- 1...e5
- 2.Bxe5#
- 2.Bb8#
- 2.Bf8#
- 1...e6
- 2.Bf4#
- 1...Ke6!
- 1...exd6+
- 1.Qxg4+?
- 1...Kd8
- 2.Bc7#
- 2.Bxe7#
- 2.Rc8#
- 2.Qc8#
- 2.fxe7#
- 1...e6!
- 1...Kd8
- 1.Bxg4+?
- Keys
- 1.Qd4!
- 1...exd6+
- 2.Qxd6#
- 1...Ke6
- 2.Bxg4#
- 1...Kd8
- 2.Bxe7#
- 1...Sxd6
- 2.Qxd6#
- 1...exf6
- 2.Bf8#
- 1...Se5
- 2.Bxe5#
- 2.Bxe7#
- 2.Bb8#
- 1...Sg5
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Bxe7#
- 2.Bb8#
- 1...Sh6
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Bxe7#
- 2.Bb8#
- 1...Sd8
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Bxe7#
- 2.Bb8#
- 2.Rxe7#
- 1...Sh8
- 2.Bh2#
- 2.Bg3#
- 2.Bf4#
- 2.Be5#
- 2.Bxe7#
- 2.Bb8#
- 1...e5
- 2.Bxe5#
- 1...e6
- 2.Bf4#
- 1...exd6+
- 1.Qd4!
There are these versions: 152536
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 1
- Sets
- S(d);OGATE,P_SPINP(c),SBLOCK::R1(G),XP(c)
- Tries
- Try
- B(B);CHECK,XR(a)
- Refutation
- P(c);P_SPINP(c),P_SPINS(d)
- Try
- B(E);XP(c)
- Threat
- DUALS(2)
- Vars
- S(d);N_GUARD::QAR(A)
- Refutation
- S(d);
- Try
- R(D);CHECK
- Vars
- K(b);N_SPINR(a),P-FLIGHT::P(F),XP(c)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(A);
- Vars
- P(c);CHECK,OGATE,P_SPINP(c),P_SPINS(d),XB(E)::QAR1(A),XP(c)
- K(b);N_SPINR(a),P-FLIGHT::QAR(A)+B(E),DCHECK,XP(c)
- S(d);OGATE,P_SPINP(c),P_SPINS(d),XB(E)::QAR1(A),XS(d)
- P(c);OGATE,P_SPINS(d),XP(F)::QAR(A)+B(E)
- S(d);N_GUARD,P_SPINP(c)::QAR(A)+B(E),XS(d)
- P(c);N_SPINR(a),P_SPINS(d)::QAR(A)+B(E)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(A);CHECK,XR(a)
- Refutation
- P(c);P_SPINP(c),P_SPINS(d)
- Try
- Actual
- Q(A);
- Vars
- P(c);CHECK,OGATE,P_SPINP(c),P_SPINS(d),XB(E)::QAR1(A),XP(c)
- K(b);S_FLIGHT::B(B),XR(a)
- K(b);N_SPINR(a),P-FLIGHT::QAR(A)+B(E),DCHECK,XP(c)
- S(d);OGATE,P_SPINP(c),P_SPINS(d),XB(E)::QAR1(A),XS(d)
- P(c);OGATE,P_SPINS(d),XP(F)::QAR(A)+B(E)
- P(c);P_SPINS(d)::QAR(A)+B(E),XP(c)
- P(c);N_SPINR(a),P_SPINS(d)::QAR(A)+B(E)
Developed and maintained by Brian Stephenson.
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