MESON Chess Problem Database
Problem Display
PID: 83690 (3Nb1K1/4p3/1p2B1kp/b2p2rp/7p/q2npR1N/1r6/BQ4R1 w - - 0 1)
Ellerman, Arnoldo
American Chess Bulletin, 1947
#2
8 + 14
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qc5
- 2.Qxd3#
- 1...Qd6
- 2.Qxd3#
- 1...Qxa1
- 2.Qxd3#
- 1...Qa2
- 2.Qxd3#
- 1...Rxb1
- 2.Bf5#
- 1...Ra2
- 2.Sf4#
- 2.Bf5#
- 1...Rc2
- 2.Bf5#
- 1...Rd2
- 2.Sf4#
- 2.Bf5#
- 1...Re2
- 2.Sf4#
- 2.Bf5#
- 1...Rf2
- 2.Sf4#
- 2.Bf5#
- 1...Rbg2
- 2.Sf4#
- 1...Rh2
- 2.Sf4#
- 2.Bf5#
- 1...Rb3
- 2.Sf4#
- 2.Bf5#
- 1...Rb4
- 2.Bf5#
- 1...Rb5
- 2.Sf4#
- 2.Bf5#
- 1...Bc3
- 2.Qxd3#
- 1...Ba4
- 2.Bf7#
- 1...Bb5
- 2.Bf7#
- 1...Bc6
- 2.Bf7#
- 1...Bd7
- 2.Bf7#
- 1...Bf7+
- 2.Bxf7#
- 1...Qc5
- Tries
- 1.Sf7?
- threat
- 2.Se5#
- 2.Sh8#
- 1...Bxf7+
- 2.Bxf7#
- 1...Rxb1
- 2.Sh8#
- 2.Bf5#
- 1...Qd6
- 2.Sh8#
- 2.Qxd3#
- 1...Rc2
- 2.Sh8#
- 2.Bf5#
- 1...Rbg2
- 2.Sf4#
- 2.Sh8#
- 1...Bc3
- 2.Qxd3#
- 1...Qc3!
- threat
- 1.Rf6+?
- 1...exf6
- 2.Sf4#
- 1...Kxf6+!
- 1...exf6
- 1.Rf7?
- threat
- 2.Sf4#
- 2.Bf5#
- 1...Rxb1
- 2.Bf5#
- 2.Rg7#
- 1...Rxg1
- 2.Bf5#
- 1...Qb4
- 2.Bf5#
- 1...Qd6
- 2.Bf5#
- 2.Qxd3#
- 1...Qa4
- 2.Bf5#
- 1...Rc2
- 2.Bf5#
- 2.Rg7#
- 1...Rf2
- 2.Rg7#
- 1...Rbg2
- 2.Sf4#
- 2.Rg7#
- 1...Rb4
- 2.Bf5#
- 2.Rg7#
- 1...Rgg2
- 2.Bf5#
- 1...Rg3
- 2.Bf5#
- 1...Rg4
- 2.Bf5#
- 1...Bd7
- 2.Sf4#
- 1...Bxf7+!
- threat
- 1.Sf7?
- Keys
- 1.Sc6!
- threat
- 2.Se5#
- 1...Bf7+
- 2.Bxf7#
- 1...Rxb1
- 2.Bf5#
- 1...Bxc6
- 2.Bf7#
- 1...Qd6
- 2.Qxd3#
- 1...Qc3
- 2.Sxe7#
- 1...Rc2
- 2.Bf5#
- 1...Rbg2
- 2.Sf4#
- 1...Bc3
- 2.Qxd3#
- threat
- 1.Sc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(b);N_GUARD::QAB(B),XS(c)
- Q(b);N_GUARD,XB(A)::QAB(B),XS(c)
- R(a);N_SPINS(c),XQ(B)::B(F)
- R(a);N_SPINS(c)::B(F)
- R(a);N_SPINR(h)::S(E)
- R(a);::B(F)
- B(f);S_CUTQ(b)::QAB(B),XS(c)
- B(n);N_GUARD::B(F)
- B(n);CHECK,N_GUARD::B(F),XB(n)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(n);CHECK,OGATE,XS(G)::B(F),XB(n)
- B(f);S_CUTQ(b)::QAB(B),XS(c)
- Refutation
- Q(b);
- Try
- R(D);CHECK
- Vars
- P(m);SBLOCK,XR(D)::S(E)
- Refutation
- K(k);CHECK,N_SPINR(h),N_SPINS(c),P-FLIGHT,P_SPINR(a),XR(D)
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- R(h);N_SPINR(h),XR(C)::B(F)
- Q(b);::B(F)
- R(a);::R1(D)
- R(h);::B(F)
- B(n);::S(E)
- Refutation
- B(n);CHECK,XR(D)
- Try
- Actual
- S(G);
- Threat
- S(G)
- Vars
- B(n);CHECK,N_GUARD::B(F),XB(n)
- R(a);N_SPINS(c),XQ(B)::B(F)
- B(n);N_GUARD,XS(G)::B(F)
- Q(b);N_GUARD::QAB(B),XS(c)
- Q(b);N_GUARD::S(G),XP(m)
- R(a);N_SPINS(c)::B(F)
- R(a);N_SPINR(h)::S(E)
- B(f);S_CUTQ(b)::QAB(B),XS(c)
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