MESON Chess Problem Database
Problem Display
PID: 824 (1r2Bb2/PPk1Pn2/K2NR3/pP2N1Q1/r7/8/2q1b2B/2R5 w - - 0 1)
Lipton, Michael
2nd Prize, British Chess Magazine, 1967
#2
12 + 8
| 5862 | An ABC of Chess Problems | 1970 |
| 3772 | FIDE Album (1965-1967) | 1976 |
| 4640 | Chess Wizardry: The New ABC of Chess Problems | 1996 |
| 17121 | Encyclopedia of Chess Problems (Velimirovic/Valtonen) | 2012 |
| 56 | The Problemist | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Qc5
- 2.Rxc5#
- 1...Qc6+
- 2.Rxc6#
- 1...Rc4
- 2.b6#
- 1...Ra8
- 2.bxa8S#
- 1...Rc8
- 2.bxc8Q#
- 2.bxc8R#
- 1...Rxe8
- 2.Sxe8#
- 1...Bd1
- 2.b6#
- 1...Bf3
- 2.b6#
- 1...Bg4
- 2.b6#
- 1...Bxb5+
- 2.Sxb5#
- 1...Bh5
- 2.b6#
- 1...Bxe7
- 2.Qxe7#
- 1...Qc5
- Tries
- 1.Sec4?
- threat
- 2.Sxf7#
- 2.Qc5#
- 2.b6#
- 1...Qxc1
- 2.Qc5#
- 2.b6#
- 1...Qxc4
- 2.Sxf7#
- 1...Rxc4
- 2.b6#
- 1...Rxb7
- 2.Qc5#
- 1...Bxc4
- 2.Qc5#
- 1...Bxe7
- 2.Qxe7#
- 1...Sxg5
- 2.Se4#
- 2.Sf5#
- 2.Sf7#
- 2.Sc8#
- 2.b6#
- 1...Sxd6
- 2.Bxd6#
- 2.Qc5#
- 2.b6#
- 1...Qb1
- 2.Sxf7#
- 2.Qc5#
- 1...Qd1
- 2.Qc5#
- 2.b6#
- 1...Qb3
- 2.Qc5#
- 1...Qd3
- 2.Qc5#
- 2.b6#
- 1...Qe4
- 2.b6#
- 1...Qf5
- 2.b6#
- 1...Qh7
- 2.Qc5#
- 2.b6#
- 1...Qb2
- 2.Qc5#
- 1...Qd2
- 2.Qc5#
- 2.b6#
- 1...Qc3
- 2.Qc5#
- 2.b6#
- 1...Ra3
- 2.Qc5#
- 2.b6#
- 1...Rb4
- 2.Sxf7#
- 2.Qc5#
- 1...Rd8
- 2.Qc5#
- 2.b6#
- 1...Bd1
- 2.Qc5#
- 2.b6#
- 1...Bf1
- 2.Qc5#
- 2.b6#
- 1...Bd3
- 2.Qc5#
- 2.b6#
- 1...Bf3
- 2.b6#
- 1...Bg4
- 2.Qc5#
- 2.b6#
- 1...Bh5
- 2.Qc5#
- 2.b6#
- 1...Bg7
- 2.Qc5#
- 2.b6#
- 1...Se5
- 2.b6#
- 1...Sh6
- 2.Se4#
- 2.Sf5#
- 2.Sf7#
- 2.Sc8#
- 2.Qc5#
- 2.b6#
- 1...Sd8
- 2.Se4#
- 2.Sf5#
- 2.Sf7#
- 2.Sc8#
- 2.b6#
- 1...Sh8
- 2.Se4#
- 2.Sf5#
- 2.Sf7#
- 2.Sc8#
- 2.Qc5#
- 2.b6#
- 1...Rxe8!
- threat
- 1.Rxc2+?
- 1...Rc4
- 2.b6#
- 1...Bc4!
- 1...Rc4
- 1.Sec4?
- Keys
- 1.Sdc4!
- threat
- 2.Sxf7#
- 2.Rc6#
- 2.b6#
- 1...Qxc1
- 2.Rc6#
- 2.b6#
- 1...Qxc4
- 2.Sxf7#
- 1...Rxc4
- 2.b6#
- 1...Rxb7
- 2.Rc6#
- 1...Rxe8
- 2.Rc6#
- 2.b6#
- 1...Bxc4
- 2.Rc6#
- 1...Bxe7
- 2.Qxe7#
- 1...Sxe5
- 2.Bxe5#
- 2.Rc6#
- 2.Qxe5#
- 2.b6#
- 1...Sxg5
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Rc6#
- 2.b6#
- 1...Rd8
- 2.Rc6#
- 2.b6#
- 1...Qb1
- 2.Sxf7#
- 2.Rc6#
- 1...Qd1
- 2.Rc6#
- 2.b6#
- 1...Qb3
- 2.Rc6#
- 1...Qd3
- 2.Rc6#
- 2.b6#
- 1...Qe4
- 2.b6#
- 1...Qf5
- 2.Rc6#
- 2.b6#
- 1...Qg6
- 2.Sxf7#
- 2.b6#
- 1...Qh7
- 2.Rc6#
- 2.b6#
- 1...Qb2
- 2.Rc6#
- 1...Qd2
- 2.Rc6#
- 2.b6#
- 1...Qc3
- 2.Rc6#
- 2.b6#
- 1...Ra3
- 2.Rc6#
- 2.b6#
- 1...Rb4
- 2.Sxf7#
- 2.Rc6#
- 1...Bd1
- 2.Rc6#
- 2.b6#
- 1...Bf1
- 2.Rc6#
- 2.b6#
- 1...Bd3
- 2.Rc6#
- 2.b6#
- 1...Bf3
- 2.b6#
- 1...Bg4
- 2.Rc6#
- 2.b6#
- 1...Bh5
- 2.Rc6#
- 2.b6#
- 1...Bg7
- 2.Rc6#
- 2.b6#
- 1...Sd6
- 2.b6#
- 1...Sh6
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Rc6#
- 2.b6#
- 1...Sd8
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.b6#
- 1...Sh8
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 2.Rc6#
- 2.b6#
- threat
- 1.Sdc4!
There are these afters: 156372
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 8
- Sets
- Q(a);OGATE::R(A),XQ(a)
- Q(a);CHECK,OGATE::R1(A),XQ(a)
- R(c);N_PINP(C),N_SPINQ(a)::P(C)
- R(g);OGATE::PXR(g)=S
- R(g);OGATE::PXR(g)=Q
- R(g);XB(L)::S(G),XR(g)
- B(b);N_PINP(C)::P(C)
- B(b);CHECK,XP(C)::S(G),XB(b)
- B(h);OGATE,XP(K)::QAR2(E),XB(h)
- Tries
- Try
- S(D);N_PINQ(a),N_SPINP(C)
- Threat
- DUALS(3)
- Vars
- Q(a);P_PINP(C),P_SPINQ(a),XS(D)::B(B)+S(G),XS(f)
- R(c);XS(D)::P(C)
- R(g);XP(J)::QAR2(E)
- B(b);P_PINP(C),XS(D)::QAR2(E)
- B(h);OGATE,XP(K)::QAR2(E),XB(h)
- Q(a);::QAR2(E)
- Q(a);::P(C)
- B(b);::P(C)
- S(f);::P(C)
- Refutation
- R(g);XB(L)
- Try
- R(A);CHECK,XQ(a)
- Vars
- R(c);N_PINP(C),P_SPINR(c)::P(C)
- Refutation
- B(b);P_SPINB(b)
- Try
- Actual
- S(G);N_PINQ(a),N_SPINP(C)
- Threat
- DUALS(3)
- Vars
- Q(a);P_PINP(C),P_SPINQ(a),XS(G)::B(B)+S(D),XS(f)
- R(c);XS(G)::P(C)
- R(g);XP(J)::R1(H)
- B(b);P_PINP(C),XS(G)::R1(H)
- B(h);OGATE,XP(K)::QAR2(E),XB(h)
- Q(a);::R1(H)
- Q(a);::P(C)
- B(b);::P(C)
- S(f);::P(C)
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