MESON Chess Problem Database
Problem Display
PID: 215633 (B7/1n4N1/3n4/7N/3bkP2/1Q1R2p1/3P2K1/8 w - - 0 1)
Lewis, Robert Tony
The Problemist, 1987
#2
8 + 5
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.Qd5#
- 1...Bg1
- 2.Qd5#
- 1...Bb2
- 2.Qd5#
- 1...Bf2
- 2.Qd5#
- 1...Bc3
- 2.Qd5#
- 1...Be3
- 2.Qd5#
- 1...Bc5
- 2.Qd5#
- 1...Be5
- 2.Qd5#
- 1...Bb6
- 2.Qd5#
- 1...Bf6
- 2.Qd5#
- 1...Ba7
- 2.Qd5#
- 1...Bxg7
- 2.Qd5#
- 1...Sc4
- 2.Bxb7#
- 1...Sb5
- 2.Bxb7#
- 1...Sf5
- 2.Bxb7#
- 1...Sf7
- 2.Bxb7#
- 1...Sc8
- 2.Bxb7#
- 1...Se8
- 2.Bxb7#
- 1...Ba1
- Tries
- 1.Kf1?
- 1...Bxg7
- 2.Qd5#
- 1...Bc3
- 2.Qd5#
- 1...Be3
- 2.Qd5#
- 1...Sc4
- 2.Bxb7#
- 1...Ba1
- 2.Qd5#
- 1...Bg1
- 2.Qd5#
- 1...Bb2
- 2.Qd5#
- 1...Bf2
- 2.Qd5#
- 1...Bc5
- 2.Qd5#
- 1...Be5
- 2.Qd5#
- 1...Bb6
- 2.Qd5#
- 1...Bf6
- 2.Qd5#
- 1...Ba7
- 2.Qd5#
- 1...Sb5
- 2.Bxb7#
- 1...Sf5
- 2.Bxb7#
- 1...Sf7
- 2.Bxb7#
- 1...Sc8
- 2.Bxb7#
- 1...Se8
- 2.Bxb7#
- 1...g2+!
- 1...Bxg7
- 1.Kh1?
- 1...Bxg7
- 2.Qd5#
- 1...Bc3
- 2.Qd5#
- 1...Be3
- 2.Qd5#
- 1...Sc4
- 2.Bxb7#
- 1...Ba1
- 2.Qd5#
- 1...Bg1
- 2.Qd5#
- 1...Bb2
- 2.Qd5#
- 1...Bf2
- 2.Qd5#
- 1...Bc5
- 2.Qd5#
- 1...Be5
- 2.Qd5#
- 1...Bb6
- 2.Qd5#
- 1...Bf6
- 2.Qd5#
- 1...Ba7
- 2.Qd5#
- 1...Sb5
- 2.Bxb7#
- 1...Sf5
- 2.Bxb7#
- 1...Sf7
- 2.Bxb7#
- 1...Sc8
- 2.Bxb7#
- 1...Se8
- 2.Bxb7#
- 1...g2+!
- 1...Bxg7
- 1.Kh3?
- 1...Bxg7
- 2.Qd5#
- 1...Bc3
- 2.Qd5#
- 1...Be3
- 2.Qd5#
- 1...Sc4
- 2.Bxb7#
- 1...Ba1
- 2.Qd5#
- 1...Bg1
- 2.Qd5#
- 1...Bb2
- 2.Qd5#
- 1...Bf2
- 2.Qd5#
- 1...Bc5
- 2.Qd5#
- 1...Be5
- 2.Qd5#
- 1...Bb6
- 2.Qd5#
- 1...Bf6
- 2.Qd5#
- 1...Ba7
- 2.Qd5#
- 1...Sb5
- 2.Bxb7#
- 1...Sf5
- 2.Bxb7#
- 1...Sf7
- 2.Bxb7#
- 1...Sc8
- 2.Bxb7#
- 1...Se8
- 2.Bxb7#
- 1...g2!
- 1...Bxg7
- 1.Qc4?
- threat
- 2.Re3#
- 2.Rxd4#
- 2.Qxd4#
- 1...Sb5
- 2.Bxb7#
- 2.Re3#
- 1...Sf5
- 2.Bxb7#
- 1...Sxc4!
- threat
- 1.Qe6+?
- 1...Be5
- 2.Qd5#
- 1...Kxd3!
- 1...Be5
- 1.Qb1?
- 1...Bxg7
- 2.Rxd6#
- 1...Ba1
- 2.Rxd6#
- 1...Bg1
- 2.Rxd6#
- 1...Bb2
- 2.Rxd6#
- 1...Bf2
- 2.Rxd6#
- 1...Bc3
- 2.Rxd6#
- 1...Be3
- 2.Rxd6#
- 1...Bc5
- 2.Rxd6#
- 1...Be5
- 2.Rxd6#
- 1...Bb6
- 2.Rxd6#
- 1...Bf6
- 2.Rxd6#
- 1...Ba7
- 2.Rxd6#
- 1...Sc4
- 2.Bxb7#
- 1...Sb5
- 2.Bxb7#
- 1...Sf5
- 2.Bxb7#
- 1...Sf7
- 2.Bxb7#
- 1...Sc8
- 2.Bxb7#
- 1...Se8
- 2.Bxb7#
- 1...Kd5!
- 1...Bxg7
- 1.Kf1?
- Keys
- 1.Qc2!
- 1...Kd5
- 2.Sf6#
- 1...Bxg7
- 2.Rxd6#
- 1...Ba1
- 2.Rxd6#
- 1...Bg1
- 2.Rxd6#
- 1...Bb2
- 2.Rxd6#
- 1...Bf2
- 2.Rxd6#
- 1...Bc3
- 2.Rxd6#
- 1...Be3
- 2.Rxd6#
- 1...Bc5
- 2.Rxd6#
- 1...Be5
- 2.Rxd6#
- 1...Bb6
- 2.Rxd6#
- 1...Bf6
- 2.Rxd6#
- 1...Ba7
- 2.Rxd6#
- 1...Sc4
- 2.Bxb7#
- 1...Sb5
- 2.Bxb7#
- 1...Sf5
- 2.Bxb7#
- 1...Sf7
- 2.Bxb7#
- 1...Sc8
- 2.Bxb7#
- 1...Se8
- 2.Bxb7#
- 1...Kd5
- 1.Qc2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 12
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(b);::QAB1(C)
- B(b);XS(G)::QAB1(C)
- S(d);N_GUARD::B(H),XS(e)
- Tries
- Try
- K(B);S_FLIGHT
- Vars
- B(b);XS(G)::QAB1(C)
- B(b);::QAB1(C)
- S(d);N_GUARD::B(H),XS(e)
- Refutation
- P(a);CHECK
- Try
- K(B);S_FLIGHT
- Vars
- B(b);XS(G)::QAB1(C)
- B(b);::QAB1(C)
- S(d);N_GUARD::B(H),XS(e)
- Refutation
- P(a);CHECK
- Try
- K(B);S_FLIGHT
- Vars
- B(b);XS(G)::QAB1(C)
- B(b);::QAB1(C)
- S(d);N_GUARD::B(H),XS(e)
- Refutation
- P(a);
- Try
- Q(C);P_PINB(b)
- Threat
- DUALS(3)
- Vars
- S(d);N_GUARD::B(H),XS(e)
- Refutation
- S(d);N_SPINB(b),XQ(C)
- Try
- Q(C);CHECK
- Vars
- B(b);P_SPINB(b)::QAB1(C)
- Refutation
- K(c);N_SPINS(e),S_FLIGHT,XR(D)
- Try
- Q(C);
- Vars
- B(b);OGATE,XS(G)::QAB(C)+R(D),XS(d)
- B(b);OGATE::QAB(C)+R(D),XS(d)
- S(d);N_GUARD::B(H),XS(e)
- Refutation
- K(c);P_SPINB(b),S_FLIGHT
- Try
- Actual
- Q(C);
- Vars
- K(c);P_SPINB(b),S_FLIGHT::S(F)
- B(b);OGATE,XS(G)::QAB(C)+R(D),XS(d)
- B(b);OGATE::QAB(C)+R(D),XS(d)
- S(d);N_GUARD::B(H),XS(e)
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