MESON Chess Problem Database
Problem Display
PID: 273377 (8/2K1P3/1Rnp1p2/2pkpB2/6r1/1NbPP1Q1/2P3b1/8 w - - 0 1)
Serre, J
diagrammes, 1978
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Ra4
- 2.Qg8#
- 1...Rb4
- 2.Qg8#
- 1...Rc4
- 2.Qg8#
- 1...Rd4
- 2.Qg8#
- 1...Re4
- 2.Qg8#
- 1...Rf4
- 2.Qg8#
- 1...Rh4
- 2.Qg8#
- 1...Rg8
- 2.Qxg8#
- 1...Bd4
- 2.c4#
- 1...Sb4
- 2.Rxd6#
- 1...Sd4
- 2.Rxd6#
- 1...Sa5
- 2.Rxd6#
- 1...Sa7
- 2.Rxd6#
- 1...Sxe7
- 2.Rxd6#
- 1...Sb8
- 2.Rxd6#
- 1...Sd8
- 2.Rxd6#
- 1...c4
- 2.Rb5#
- 1...e4
- 2.Qxd6#
- 1...Ra4
- Tries
- 1.Kd7?
- threat
- 2.Be6#
- 1...Sd4
- 2.Rxd6#
- 1...Sd8
- 2.Rxd6#
- 1...Sb8+!
- threat
- 1.Qxg2+?
- 1...Rxg2
- 2.e4#
- 1...Re4
- 2.Qxe4#
- 2.Qg8#
- 1...e4!
- 1...Rxg2
- 1.Qxg4?
- threat
- 2.Be6#
- 2.Qc4#
- 2.Qg8#
- 1...Sxe7
- 2.Be6#
- 2.Rxd6#
- 2.Qc4#
- 1...Be4
- 2.Bxe4#
- 2.Be6#
- 2.Qxe4#
- 2.Qg8#
- 1...Bd4
- 2.Be6#
- 2.Qg8#
- 2.c4#
- 1...Sd4
- 2.Rxd6#
- 1...Sa5
- 2.Be6#
- 2.Rxd6#
- 2.Qg8#
- 1...Sd8
- 2.Rxd6#
- 2.Qc4#
- 1...c4
- 2.Be6#
- 2.Rb5#
- 2.Qxc4#
- 2.Qg8#
- 2.dxc4#
- 1...e4!
- threat
- 1.e4+?
- 1...Rxe4
- 2.Qg8#
- 1...Bxe4!
- 1...Rxe4
- 1.e8Q?
- threat
- 2.Be6#
- 2.Qxc6#
- 2.Qf7#
- 2.Qe6#
- 1...Sb4
- 2.Be6#
- 2.Rxd6#
- 2.Qf7#
- 2.Qe6#
- 1...Sd4
- 2.Rxd6#
- 1...Sa5
- 2.Be6#
- 2.Rxd6#
- 2.Qf7#
- 2.Qe6#
- 1...Sa7
- 2.Be6#
- 2.Rxd6#
- 2.Qf7#
- 2.Qe6#
- 1...Se7
- 2.Rxd6#
- 2.Qf7#
- 1...Sb8
- 2.Be6#
- 2.Rxd6#
- 2.Qf7#
- 2.Qe6#
- 1...Sd8
- 2.Rxd6#
- 1...Rg7+!
- threat
- 1.e8B?
- threat
- 2.Bxc6#
- 2.Bf7#
- 1...Sb4
- 2.Bf7#
- 2.Rxd6#
- 1...Sd4
- 2.Rxd6#
- 1...Sa5
- 2.Bf7#
- 2.Rxd6#
- 1...Sa7
- 2.Bf7#
- 2.Rxd6#
- 1...Se7
- 2.Bf7#
- 2.Rxd6#
- 1...Sb8
- 2.Bf7#
- 2.Rxd6#
- 1...Sd8
- 2.Rxd6#
- 1...Rg7+!
- threat
- 1.e8R?
- threat
- 2.Be6#
- 1...Sd4
- 2.Rxd6#
- 1...Se7
- 2.Rxd6#
- 1...Sd8
- 2.Rxd6#
- 1...Rg7+!
- threat
- 1.Kd7?
- Keys
- 1.Sd4!
- threat
- 2.Be6#
- 1...Rxd4
- 2.Qg8#
- 1...Bxd4
- 2.c4#
- 1...Sxd4
- 2.Rxd6#
- 1...cxd4
- 2.Rb5#
- 1...exd4
- 2.Qxd6#
- 1...c4
- 2.Rb5#
- 1...Sd8
- 2.Rxd6#
- threat
- 1.Sd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 13
- Sets
- R(c);OGATE::QAB(E)
- R(c);OGATE::QAB(E),XR(c)
- B(b);OGATE::P(A)
- S(g);OGATE::R1(G),XP(h)
- S(g);OGATE,XP(I)::R1(G),XP(h)
- P(d);OGATEB::R(G)
- P(f);OGATE::QAR1(E),XP(h)
- Tries
- Try
- K(H);P-FLIGHT
- Threat
- B(F)
- Vars
- S(g);OGATE::R1(G),XP(h)
- Refutation
- S(g);CHECK
- Try
- Q(E);CHECK,XB(a)
- Vars
- R(c);N_GUARD,XQ(E)::P(D)
- Refutation
- P(f);P_SPINP(f)
- Try
- Q(E);XR(c)
- Threat
- DUALS(3)
- Vars
- S(g);OGATE::R1(G),XP(h)
- Refutation
- P(f);
- Try
- P(D);CHECK
- Vars
- R(c);OGATE,XP(D)::QAB(E)
- Refutation
- B(a);XP(D)
- Try
- P(I);
- Threat
- DUALS(4)
- Vars
- S(g);OGATE::R1(G),XP(h)
- Refutation
- R(c);CHECK
- Try
- P(I);
- Threat
- DUALS(2)
- Vars
- S(g);OGATE::R1(G),XP(h)
- Refutation
- R(c);CHECK
- Try
- P(I);
- Threat
- B(F)
- Vars
- S(g);OGATE::R1(G),XP(h)
- Refutation
- R(c);CHECK
- Try
- Actual
- S(B);
- Threat
- B(F)
- Vars
- R(c);OGATE,XS(B)::QAB(E)
- B(b);OGATE,XS(B)::P(A)
- S(g);OGATE,XS(B)::R1(G),XP(h)
- P(d);OGATEB,XS(B)::R(G)
- P(f);OGATE,XS(B)::QAR1(E),XP(h)
- P(d);OGATEB::R(G)
- S(g);OGATE::R1(G),XP(h)
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