MESON Chess Problem Database
Problem Display
PID: 137647 (B1nK4/8/4P2N/R1B5/Q2p1kpP/P1p1R2b/2N2Pp1/qn1rb2r w - - 0 1)
Ellerman, Arnoldo
Deutsche Schachzeitung, 1960
#2
12 + 12
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Qxd4#
- 1...Bd2
- 2.Qxd4#
- 1...Sb6
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sa7
- 2.Bd6#
- 1...Se7
- 2.Bd6#
- 1...Rc1
- Tries
- 1.Sxe1?
- threat
- 2.Re4#
- 1...Rdxe1
- 2.Qxd4#
- 1...Sd2
- 2.Sd3#
- 1...Sd6
- 2.Bxd6#
- 1...Rhxe1!
- threat
- 1.Sb4?
- threat
- 2.Sd5#
- 1...dxe3+
- 2.Sd3#
- 1...Sb6
- 2.Bd6#
- 1...Se7
- 2.Bd6#
- 1...Qa2!
- threat
- 1.Sxd4?
- threat
- 2.Re4#
- 1...Rxd4+
- 2.Qxd4#
- 1...Sd2
- 2.Se2#
- 1...Sd6
- 2.Se2#
- 2.Bxd6#
- 1...Bxf2!
- threat
- 1.Bxd4?
- threat
- 2.Rf5#
- 1...Rxd4+
- 2.Qxd4#
- 1...Sd6
- 2.Be5#
- 1...g3
- 2.Rf3#
- 1...Se7!
- threat
- 1.Bb6?
- threat
- 2.Rf5#
- 1...Se7
- 2.Bc7#
- 1...g3
- 2.Rf3#
- 1...Sd6!
- threat
- 1.Ba7?
- threat
- 2.Rf5#
- 1...Se7
- 2.Bb8#
- 1...g3
- 2.Rf3#
- 1...Sd6!
- threat
- 1.Be7?
- threat
- 2.Bg5#
- 2.Rf5#
- 1...Sd6
- 2.Bg5#
- 2.Bxd6#
- 1...g3
- 2.Bg5#
- 2.Rf3#
- 1...Sxe7!
- threat
- 1.Bf8?
- threat
- 2.Rf5#
- 1...Sd6
- 2.Bxd6#
- 1...g3
- 2.Rf3#
- 1...Se7!
- threat
- 1.Ra7?
- threat
- 2.Rf7#
- 1...Sxa7
- 2.Bd6#
- 1...Se7
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...g3!
- threat
- 1.Qd7?
- threat
- 2.Qf7#
- 1...dxe3
- 2.Bxe3#
- 1...Se7
- 2.Bd6#
- 2.Qd6#
- 2.Qc7#
- 1...Sd6
- 2.Bxd6#
- 2.Qxd6#
- 1...g3!
- threat
- 1.Sxe1?
- Keys
- 1.Bb4!
- threat
- 2.Rf5#
- 1...dxe3+
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Se7
- 2.Bd6#
- 1...g3
- 2.Rf3#
- threat
- 1.Bb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- R(c);N_GUARD::QAR2(E),XP(i)
- B(d);S_CUTR(c)::QAR2(E),XP(i)
- S(l);N_GUARD::B(H)
- S(l);N_GUARD::B(H),XS(l)
- Tries
- Try
- S(A);XB(d)
- Threat
- R1(D)
- Vars
- R(c);N_GUARD,XS(A)::QAR2(E),XP(i)
- S(b);S_CUTR(c)::S(A)
- S(l);N_GUARD::B(H),XS(l)
- Refutation
- R(e);XS(A)
- Try
- S(A);N_PINP(i)
- Threat
- S(A)
- Vars
- P(i);CHECK,XR(D)::QAR(E)+S(A),DCHECK
- S(l);N_GUARD::B(H)
- Refutation
- Q(a);
- Try
- S(A);P_SPINS(A),XP(i)
- Threat
- R1(D)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XS(A)::QAR2(E),XR(c)
- S(b);N_PINS(A)::QAR(E)+S(A),DCHECK
- Refutation
- B(d);XP(B)
- Try
- B(H);P_SPINB(H),XP(i)
- Threat
- R1(G)
- Vars
- R(c);CHECK,OGATE,P_SPINR(c),XB(H)::QAR2(E),XR(c)
- S(l);N_PINB(H)::QAR(E)+B(H),DCHECK
- P(k);N_GUARD::R1(D)
- Refutation
- S(l);
- Try
- B(H);
- Threat
- R1(G)
- Vars
- S(l);N_GUARD::B(H)
- P(k);N_GUARD::R1(D)
- Refutation
- S(l);
- Try
- B(H);
- Threat
- R1(G)
- Vars
- S(l);N_GUARD::B(H)
- P(k);N_GUARD::R1(D)
- Refutation
- S(l);
- Try
- B(H);
- Threat
- DUALS(2)
- Refutation
- S(l);XB(H)
- Try
- B(H);
- Threat
- R1(G)
- Vars
- S(l);N_GUARD::B(H),XS(l)
- P(k);N_GUARD::R1(D)
- Refutation
- S(l);
- Try
- R(G);
- Threat
- R(G)
- Vars
- S(l);N_GUARD,XR(G)::B(H)
- S(l);N_GUARD::B(H)
- S(l);N_GUARD::B(H),XS(l)
- Refutation
- P(k);
- Try
- Q(E);N_PINP(i)
- Threat
- QAR(E)
- Vars
- P(i);OGATE,P_PINQ(E),XR(D)::B(H),XP(i)
- Refutation
- P(k);
- Try
- Actual
- B(H);N_PINP(i)
- Threat
- R1(G)
- Vars
- P(i);CHECK,XR(D)::QAR(E)+B(H),DCHECK
- S(l);N_GUARD::B(H),XS(l)
- S(l);N_GUARD::B(H)
- P(k);N_GUARD::R1(D)
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