MESON Chess Problem Database
Problem Display
PID: 67664 (8/2rp4/n2RrP2/q2p3K/1P1kB1NR/4pPB1/1PQbb3/4N3 w - - 0 1)
Ellerman, Arnoldo
Chess, 1948
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxb4
- 2.Rxd5#
- 1...Qb6
- 2.Rxd5#
- 1...Qa1
- 2.Rxd5#
- 1...Qa3
- 2.Rxd5#
- 1...Qa4
- 2.Rxd5#
- 1...Rxe4
- 2.Qxe4#
- 1...Re5+
- 2.Bxe5#
- 1...Rxd6
- 2.Be5#
- 1...Rxf6
- 2.Be5#
- 1...Bd1
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bxf3
- 2.Sxf3#
- 2.Qd3#
- 1...Bb5
- 2.Rxd5#
- 1...Sc5
- 2.Rxd5#
- 1...Qxb4
- Tries
- 1.Se5?
- threat
- 2.Bd3#
- 2.Bxd5#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...Bxf3+
- 2.S1xf3#
- 2.S5xf3#
- 2.Bxf3#
- 1...Rxd6
- 2.Bd3#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...Rxf6
- 2.Bf5#
- 1...Bd3
- 2.Bxd3#
- 2.Qxd3#
- 1...Sc5
- 2.Rxd5#
- 1...Rxe5+!
- threat
- 1.Bd3?
- threat
- 2.Se5#
- 1...Re5+
- 2.Sxe5#
- 2.Bxe5#
- 1...Rxf6
- 2.Sxf6#
- 2.Be5#
- 1...Bxd3
- 2.Qxd3#
- 1...Bxf3
- 2.Sxf3#
- 1...Sc5
- 2.Qc4#
- 1...Re4!
- threat
- 1.Bf5?
- threat
- 2.Se5#
- 1...Bxf3
- 2.Sxf3#
- 2.Qd3#
- 1...Re4
- 2.Qxe4#
- 1...Re5
- 2.Sxe5#
- 2.Bxe5#
- 1...Bd3
- 2.Qxd3#
- 1...Sc5!
- threat
- 1.Bg6?
- threat
- 2.Se5#
- 1...Re5+
- 2.Sxe5#
- 2.Bxe5#
- 1...Rxf6
- 2.Sxf6#
- 2.Be5#
- 2.Qe4#
- 1...Bxf3
- 2.Sxf3#
- 2.Qd3#
- 1...Re4
- 2.Qxe4#
- 1...Bd3
- 2.Qxd3#
- 1...Sc5!
- threat
- 1.Bh7?
- threat
- 2.Se5#
- 1...Re5+
- 2.Sxe5#
- 2.Bxe5#
- 1...Rxf6
- 2.Sxf6#
- 2.Be5#
- 2.Qe4#
- 1...Bxf3
- 2.Sxf3#
- 2.Qd3#
- 1...Re4
- 2.Qxe4#
- 1...Bd3
- 2.Qxd3#
- 1...Sc5!
- threat
- 1.Se5?
- Keys
- 1.Bxd5!
- threat
- 2.Se5#
- 1...Re5+
- 2.Sxe5#
- 2.Bxe5#
- 1...Rxd6
- 2.Qe4#
- 1...Rxf6
- 2.Sxf6#
- 2.Be5#
- 2.Qe4#
- 1...Bxf3
- 2.Sxf3#
- 2.Qd3#
- 1...Re4
- 2.Qxe4#
- 1...Bd3
- 2.Qxd3#
- 1...Sc5
- 2.Bxe6#
- threat
- 1.Bxd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 9
- Sets
- Q(e);N_GUARD,XP(F)::R1(K),XP(f)
- Q(e);N_GUARD::R1(K),XP(f)
- R(h);OGATE,XB(G)::QAR1(C),XR(h)
- R(h);CHECK,N_GUARD::B(E),XR(h)
- R(h);N_GUARD,N_SPINP(f),XR(K)::B(E)
- R(h);N_GUARD,XP(L)::B(E)
- B(b);N_GUARD::QAR1(C)
- B(b);N_GUARD::QAR1(C),XB(b)
- B(b);S_CUTQ(e)::R1(K),XP(f)
- S(g);S_CUTQ(e)::R1(K),XP(f)
- Tries
- Try
- S(H);P_SPINP(D)
- Threat
- DUALS(5)
- Vars
- R(h);XP(L)::R(I)+B(G)
- S(g);S_CUTQ(e)::R1(K),XP(f)
- Refutation
- R(h);CHECK,XS(H)
- Try
- B(G);
- Threat
- R(I)+S(H)
- Vars
- B(b);OGATE,XB(G)::QAR1(C),XB(b)
- B(b);P_PINS(H),XP(D)::S(A),XB(b)
- S(g);S_CUTR(i)::QAR1(C)
- Refutation
- R(h);
- Try
- B(G);
- Threat
- R(I)+S(H)
- Vars
- R(h);N_GUARD::QAR1(C),XR(h)
- B(b);N_GUARD::QAR1(C),XB(b)
- Refutation
- S(g);
- Try
- B(G);
- Threat
- R(I)+S(H)
- Vars
- R(h);N_GUARD::QAR1(C),XR(h)
- B(b);N_GUARD::QAR1(C),XB(b)
- Refutation
- S(g);
- Try
- B(G);
- Threat
- R(I)+S(H)
- Vars
- R(h);N_GUARD::QAR1(C),XR(h)
- B(b);N_GUARD::QAR1(C),XB(b)
- Refutation
- S(g);
- Try
- Actual
- B(G);P_SPINB(G),XP(f)
- Threat
- R(I)+S(H)
- Vars
- R(h);N_GUARD,XR(K)::QAR1(C)
- R(h);N_GUARD::QAR1(C),XR(h)
- B(b);N_GUARD::QAR1(C),XB(b)
- S(g);N_PINB(G)::R(K)+B(G),XR(h)
Developed and maintained by Brian Stephenson.
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