MESON Chess Problem Database
Problem Display
PID: 268297 (8/n1N2p2/5R2/K1P1p3/Q2bk3/2R1p1PB/2P5/4n3 w - - 0 1)
Thomson, Robert Gavin
Sunday Referee, 1929
(First published on Sun Mar 17 1929)
#2
9 + 7
| 15239 | Valois Notebooks | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Sxc2
- 2.Bg2#
- 2.Qxc2#
- 1...Sg2
- 2.Bxg2#
- 1...Sd3
- 2.Bg2#
- 2.cxd3#
- 1...Sf3
- 2.Bf5#
- 1...Sc6+
- 2.Qxc6#
- 1...Sc8
- 2.Qc6#
- 1...e2
- 2.Bf5#
- 1...Sxc2
- Tries
- 1.Ka6?
- 1...Sxc2
- 2.Bg2#
- 2.Qxc2#
- 1...Sg2
- 2.Bxg2#
- 1...Sd3
- 2.Bg2#
- 2.cxd3#
- 1...Sf3
- 2.Bf5#
- 1...Sc6
- 2.Qxc6#
- 1...Sc8
- 2.Qc6#
- 1...e2
- 2.Bf5#
- 1...Sb5!
- 1...Sxc2
- 1.Kb6?
- 1...Sxc2
- 2.Bg2#
- 2.Qxc2#
- 1...Sg2
- 2.Bxg2#
- 1...Sd3
- 2.Bg2#
- 2.cxd3#
- 1...Sf3
- 2.Bf5#
- 1...Sb5
- 2.Qa8#
- 1...Sc6
- 2.Qxc6#
- 1...e2
- 2.Bf5#
- 1...Sc8+!
- 1...Sxc2
- 1.Bg2+?
- 1...Sf3
- 2.Bxf3#
- 1...Sxg2!
- 1...Sf3
- 1.Bg4?
- 1...Sc6+
- 2.Qxc6#
- 1...Sxc2
- 2.Bf3#
- 2.Qxc2#
- 1...Sf3
- 2.Bxf3#
- 2.Bf5#
- 1...Sg2
- 2.Bf3#
- 1...Sd3
- 2.Bf3#
- 2.cxd3#
- 1...Sc8
- 2.Qc6#
- 1...e2
- 2.Bf5#
- 1...Sb5!
- 1...Sc6+
- 1.Be6?
- threat
- 2.Bd5#
- 1...Sc6+
- 2.Qxc6#
- 1...fxe6!
- threat
- 1.Bd7?
- 1...Sc6+
- 2.Bxc6#
- 2.Qxc6#
- 1...Sxc2
- 2.Qxc2#
- 1...Sb5
- 2.Bc6#
- 1...Sd3
- 2.cxd3#
- 1...Sf3
- 2.Bf5#
- 1...Sc8
- 2.Bc6#
- 2.Qc6#
- 1...e2
- 2.Bf5#
- 1...Sg2!
- 1...Sc6+
- 1.Bc8?
- 1...Sc6+
- 2.Qxc6#
- 1...Sxc2
- 2.Qxc2#
- 1...Sxc8
- 2.Qc6#
- 1...Sb5
- 2.Bb7#
- 1...Sd3
- 2.cxd3#
- 1...Sf3
- 2.Bf5#
- 1...e2
- 2.Bf5#
- 1...Sg2!
- 1...Sc6+
- 1.Ra3?
- 1...Sc6+
- 2.Qxc6#
- 1...Sxc2
- 2.Bg2#
- 2.Qxc2#
- 1...Sg2
- 2.Bxg2#
- 1...Sd3
- 2.Bg2#
- 2.cxd3#
- 1...Sf3
- 2.Bf5#
- 1...Sc8
- 2.Qc6#
- 1...e2
- 2.Bf5#
- 1...Sb5!
- 1...Sc6+
- 1.Rb3?
- 1...Sc6+
- 2.Qxc6#
- 1...Sxc2
- 2.Bg2#
- 1...Sg2
- 2.Bxg2#
- 1...Sd3
- 2.Bg2#
- 2.cxd3#
- 1...Sf3
- 2.Bf5#
- 1...Sc8
- 2.Qc6#
- 1...e2
- 2.Bf5#
- 1...Sb5!
- 1...Sc6+
- 1.Rf1?
- threat
- 2.Bf5#
- 1...Sc6+
- 2.Qxc6#
- 1...f5
- 2.Bxf5#
- 1...Sf3!
- threat
- 1.Rxf7?
- 1...Sc6+
- 2.Qxc6#
- 1...Sxc2
- 2.Bg2#
- 2.Qxc2#
- 1...Sg2
- 2.Bxg2#
- 1...Sd3
- 2.Bg2#
- 2.cxd3#
- 1...Sf3
- 2.Bf5#
- 1...Sc8
- 2.Qc6#
- 1...e2
- 2.Bf5#
- 1...Sb5!
- 1...Sc6+
- 1.Qd7?
- threat
- 2.Qg4#
- 2.Qf5#
- 2.Qd5#
- 1...Sc6+
- 2.Qxc6#
- 1...Bxc5
- 2.Qg4#
- 2.Qd5#
- 1...Sg2
- 2.Bxg2#
- 2.Qf5#
- 2.Qd5#
- 1...Sd3
- 2.Bg2#
- 2.Qf5#
- 2.Qd5#
- 2.cxd3#
- 1...Bxc3+!
- threat
- 1.Qe8?
- threat
- 2.Rf4#
- 1...Sc6+
- 2.Qxc6#
- 1...Sg2
- 2.Bxg2#
- 1...Sd3
- 2.Bg2#
- 2.cxd3#
- 1...Bxc3+!
- threat
- 1.Ka6?
- Keys
- 1.Kb4!
- 1...Bxc3+
- 2.Kxc3#
- 1...Bxc5+
- 2.Kxc5#
- 1...Sxc2+
- 2.Qxc2#
- 1...Sd3+
- 2.cxd3#
- 1...Sc6+
- 2.Qxc6#
- 1...Sg2
- 2.Bxg2#
- 1...Sf3
- 2.Bf5#
- 1...Sb5
- 2.Qa8#
- 1...Sc8
- 2.Qc6#
- 2.Qa8#
- 1...e2
- 2.Bf5#
- 1...Bxc3+
- 1.Kb4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- S(a);N_GUARD::B(D),XS(a)
- S(a);SBLOCK::B(D)
- S(f);CHECK,N_GUARD::QAB(E),XS(f)
- S(f);N_GUARD::QAB(E)
- P(b);::B(D)
- Tries
- Try
- K(F);P-FLIGHT
- Vars
- S(a);N_GUARD::B(D),XS(a)
- S(a);SBLOCK::B(D)
- S(f);N_GUARD::QAB(E),XS(f)
- S(f);N_GUARD::QAB(E)
- P(b);::B(D)
- Refutation
- S(f);
- Try
- K(F);P_SPINP(G),S_FLIGHT
- Vars
- S(a);N_GUARD::B(D),XS(a)
- S(a);SBLOCK::B(D)
- S(f);OGATE::QAB(E)
- S(f);N_GUARD::QAB(E),XS(f)
- P(b);::B(D)
- Refutation
- S(f);CHECK
- Try
- B(D);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::B(D),XS(a)
- Refutation
- S(a);XB(D)
- Try
- B(D);
- Vars
- S(f);CHECK,N_GUARD::QAB(E),XS(f)
- S(a);N_GUARD::B(D)
- S(f);N_GUARD::QAB(E)
- P(b);::B(D)
- Refutation
- S(f);
- Try
- B(D);
- Threat
- B(D)
- Vars
- S(f);CHECK,N_GUARD::QAB(E),XS(f)
- Refutation
- P(g);XB(D)
- Try
- B(D);
- Vars
- S(a);OGATE,XP(A)::QAB(E),XS(a)
- S(f);N_GUARD::B(D)
- S(a);OGATE::P(A),XS(a)
- S(a);SBLOCK::B(D)
- P(b);::B(D)
- Refutation
- S(a);
- Try
- B(D);
- Vars
- S(f);CHECK,N_GUARD::QAB(E),XS(f)
- S(a);OGATE,XP(A)::QAB(E),XS(a)
- S(f);N_GUARD,XB(D)::QAB(E)
- S(f);N_GUARD::B(D)
- S(a);OGATE::P(A),XS(a)
- S(a);SBLOCK::B(D)
- P(b);::B(D)
- Refutation
- S(a);
- Try
- R(B);
- Vars
- S(f);CHECK,N_GUARD::QAB(E),XS(f)
- S(a);N_GUARD::B(D),XS(a)
- S(a);SBLOCK::B(D)
- S(f);N_GUARD::QAB(E)
- P(b);::B(D)
- Refutation
- S(f);
- Try
- R(B);
- Vars
- S(f);CHECK,N_GUARD::QAB(E),XS(f)
- S(a);N_GUARD,XP(A)::B(D)
- S(a);N_GUARD::B(D),XS(a)
- S(a);SBLOCK::B(D)
- S(f);N_GUARD::QAB(E)
- P(b);::B(D)
- Refutation
- S(f);
- Try
- R(H);
- Threat
- B(D)
- Vars
- S(f);CHECK,N_GUARD::QAB(E),XS(f)
- P(g);::B(D),XP(g)
- Refutation
- S(a);
- Try
- R(H);XP(g)
- Vars
- S(f);CHECK,N_GUARD::QAB(E),XS(f)
- S(a);N_GUARD::B(D),XS(a)
- S(a);SBLOCK::B(D)
- S(f);N_GUARD::QAB(E)
- P(b);::B(D)
- Refutation
- S(f);
- Try
- Q(E);N_PINB(c)
- Threat
- DUALS(3)
- Vars
- S(f);CHECK,N_GUARD::QAB(E),XS(f)
- Refutation
- B(c);CHECK,XR(B)
- Try
- Q(E);N_PINB(c),P_PINP(e)
- Threat
- R1(H)
- Vars
- S(f);CHECK,N_GUARD::QAB(E),XS(f)
- S(a);N_GUARD::B(D),XS(a)
- Refutation
- B(c);CHECK,XR(B)
- Try
- Actual
- K(F);N_PINB(c),S_FLIGHT
- Vars
- B(c);CHECK,XR(B)::QAR(E)+K(F),XB(c)
- B(c);CHECK,XP(G)::QAR(E)+K(F),XB(c)
- S(a);CHECK,OGATE,XP(A)::QAB(E),XS(a)
- S(a);CHECK,OGATE::P(A),XS(a)
- S(f);CHECK,N_GUARD::QAB(E),XS(f)
- S(a);N_GUARD::B(D),XS(a)
- S(a);SBLOCK::B(D)
- S(f);OGATE::QAB(E)
- P(b);::B(D)
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