MESON Chess Problem Database
Problem Display
PID: 142547 (n5n1/Q2N4/pqPr1b2/Pp2R2K/3k4/NR3B2/2P2P1B/3r4 w - - 0 1)
Reeves, Alfred Christopher
5th Prize, Melnichenko MT, 2009
#2
12 + 9
| 23 | Die Schwalbe | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Qc5
- 2.Qxc5#
- 1...Ra1
- 2.Rd3#
- 1...Rb1
- 2.Rd3#
- 1...Rc1
- 2.Rd3#
- 1...Re1
- 2.Rd3#
- 1...Rf1
- 2.Rd3#
- 1...Rg1
- 2.Rd3#
- 1...Rh1
- 2.Rd3#
- 1...Rd3
- 2.Rxd3#
- 1...Rd5
- 2.Rxd5#
- 1...Rxc6
- 2.Rd5#
- 1...Re6
- 2.Rd5#
- 1...Rxd7
- 2.Qxd7#
- 1...Bxe5
- 2.Bxe5#
- 1...Sc7
- 2.Qxb6#
- 1...Qc5
- Tries
- 1.Sxb6?
- threat
- 2.Sxa8#
- 1...Rxc6
- 2.Rd5#
- 1...Sxb6
- 2.Qxb6#
- 1...Rd5
- 2.Rxd5#
- 1...Rd7
- 2.Qxd7#
- 1...Sc7
- 2.Sa4#
- 2.Sbc4#
- 2.Sd5#
- 2.Sd7#
- 2.Sa8#
- 2.Sc8#
- 1...Bd8!
- threat
- 1.Rbe3?
- threat
- 2.c3#
- 1...Rxc6
- 2.Rd5#
- 1...Rd3
- 2.Rxd3#
- 1...Rc1
- 2.Rd3#
- 1...b4!
- threat
- 1.Rexb5?
- threat
- 2.R5b4#
- 1...Qc5+
- 2.Qxc5#
- 1...Rd5+
- 2.Rxd5#
- 1...Rxc6
- 2.Rd5#
- 1...Rxd7
- 2.Qxd7#
- 1...axb5!
- threat
- 1.Rc5?
- threat
- 2.Rb4#
- 1...Qxc5+
- 2.Qxc5#
- 1...Rd5+
- 2.Rxd5#
- 1...Qxa5
- 2.Rc4#
- 2.Rd5#
- 1...b4
- 2.Rc4#
- 1...Rb1
- 2.Rd3#
- 1...Rxd7!
- threat
- 1.Rg5?
- threat
- 2.Rg4#
- 1...Rxd7
- 2.Qxd7#
- 1...Bxg5
- 2.Be5#
- 1...Qc5
- 2.Qxc5#
- 1...Re1
- 2.Rd3#
- 1...Rg1
- 2.Rd3#
- 1...Rd5
- 2.Rxd5#
- 1...Re6
- 2.Rd5#
- 1...Be5
- 2.Bxe5#
- 1...Sh6!
- threat
- 1.c4?
- threat
- 2.Re4#
- 1...Rxd7
- 2.Qxd7#
- 1...Bxe5
- 2.Bxe5#
- 1...bxc4
- 2.Sc2#
- 1...Qc5
- 2.Qxc5#
- 1...Rd5
- 2.Rxd5#
- 1...Re6
- 2.Rd5#
- 1...Re1!
- threat
- 1.Sxb6?
- Keys
- 1.Rf5!
- threat
- 2.Rf4#
- 1...Rxd7
- 2.Qxd7#
- 1...Qc5
- 2.Qxc5#
- 1...Re1
- 2.Rd3#
- 1...Rd5
- 2.Rxd5#
- 1...Re6
- 2.Rd5#
- 1...Be5
- 2.Bxe5#
- 1...Bg5
- 2.Be5#
- threat
- 1.Rf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- Q(e);OGATE,P_PINR(H)::QAB1(K),XQ(e)
- R(a);N_GUARD::R1(E)
- R(a);N_GUARD,P_PINB(C)::R1(E)
- R(a);N_GUARD::R1(E),XR(a)
- R(f);N_GUARD,P_PINR(H)::R1(H),XR(f)
- R(f);N_GUARD,XP(J)::R1(H)
- R(f);N_GUARD::R1(H)
- R(f);OGATE,XS(L)::QAR(K),XR(f)
- B(g);OGATE,XR(H)::B(C),XB(g)
- S(h);N_GUARD::QAB(K),XQ(e)
- Tries
- Try
- S(L);XQ(e)
- Threat
- QAB(K)+S(L),XS(h)
- Vars
- R(f);N_GUARD,XP(J)::R1(H)
- S(h);OGATE,P_SPINS(h),XS(L)::QAB(K),XS(h)
- R(f);N_GUARD,P_PINR(H)::R1(H),XR(f)
- R(f);OGATEB::QAR(K),XR(f)
- Refutation
- B(g);
- Try
- R(E);
- Threat
- P(A)
- Vars
- R(f);N_GUARD,XP(J)::R1(H)
- R(a);N_GUARD::R1(E),XR(a)
- R(a);N_GUARD::R1(E)
- Refutation
- P(c);
- Try
- R(H);XP(c)
- Threat
- R(H)
- Vars
- Q(e);CHECK,OGATE::QAB1(K),XQ(e)
- R(f);CHECK,N_GUARD::R1(H),XR(f)
- R(f);N_GUARD,XP(J)::R1(H)
- R(f);OGATE,XS(L)::QAR(K),XR(f)
- Refutation
- P(d);XR(H)
- Try
- R(H);N_PINQ(e)
- Threat
- R(E)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XR(H)::QAB1(K),XQ(e)
- R(f);CHECK,N_GUARD::R1(H),XR(f)
- P(c);N_GUARD::R1(H)
- R(a);N_GUARD::R1(E)
- Refutation
- R(f);XS(L)
- Try
- R(H);
- Threat
- R(H)
- Vars
- R(f);OGATE,XS(L)::QAR(K),XR(f)
- B(g);N_GUARD,XR(H)::B(C)
- Q(e);OGATE,P_PINR(H)::QAB1(K),XQ(e)
- R(a);N_GUARD::R1(E)
- R(f);N_GUARD,P_PINR(H)::R1(H),XR(f)
- R(f);N_GUARD::R1(H)
- B(g);N_GUARD::B(C),XB(g)
- Refutation
- S(i);
- Try
- P(A);
- Threat
- R1(H)
- Vars
- R(f);OGATE,XS(L)::QAR(K),XR(f)
- B(g);OGATE,XR(H)::B(C),XB(g)
- P(c);SBLOCK,XP(A)::S(D)
- Q(e);OGATE,P_PINR(H)::QAB1(K),XQ(e)
- R(f);N_GUARD,P_PINR(H)::R1(H),XR(f)
- R(f);N_GUARD::R1(H)
- Refutation
- R(a);
- Try
- Actual
- R(H);
- Threat
- R(H)
- Vars
- R(f);OGATE,XS(L)::QAR(K),XR(f)
- Q(e);OGATE,P_PINR(H)::QAB1(K),XQ(e)
- R(a);N_GUARD::R1(E)
- R(f);N_GUARD,P_PINR(H)::R1(H),XR(f)
- R(f);N_GUARD::R1(H)
- B(g);N_GUARD::B(C),XB(g)
- B(g);N_GUARD::B(C)
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