MESON Chess Problem Database

Problem Display
PID: 7841 (8/4N3/3Pp1N1/1n6/1P2k1p1/2pR3b/3PB3/3Q2K1 w - - 0 1)

Rice, John Michael

1st Prize, Le Coup de Belfort, 1994

8/4N3/3Pp1N1/1n6/1P2k1p1/2pR3b/3PB3/3Q2K1

#2

9 + 6

4640 Chess Wizardry: The New ABC of Chess Problems 1996
3681 FIDE Album (1992-1994) 2001
5174 Chess Problem Spectrum 2003
56 The Problemist 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Re3#
  • Tries
    • 1.Bf1?
      • threat
        • 2.Qe2#
        • 2.Qe1#
      • 1...cxd2
        • 2.Qe2#
      • 1...Sd4
        • 2.Re3#
      • 1...Bxf1!
    • 1.Bf3+?
      • 1...gxf3
        • 2.Qxf3#
      • 1...Kxd3!
    • 1.Qc2?
      • threat
        • 2.Rd5#
      • 1...cxd2
        • 2.Qc6#
      • 1...Sd4
        • 2.Re3#
      • 1...Sa3!
    • 1.Qb3?
      • threat
        • 2.Qxe6#
      • 1...Sd4
        • 2.Re3#
      • 1...Sc7
        • 2.Qc4#
      • 1...e5
        • 2.Qd5#
      • 1...g3!
    • 1.Qe1?
      • threat
        • 2.Bf1#
      • 1...Bf1
        • 2.Bxf1#
      • 1...Sd4
        • 2.Re3#
      • 1...cxd2!
    • 1.Qf1?
      • threat
        • 2.Qf4#
      • 1...e5
        • 2.Qf5#
      • 1...Bxf1!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qa8#
      • 1...Sxd6
        • 2.Qc6#
      • 1...Sd4
        • 2.Re3#
      • 1...Sa7
        • 2.b5#
      • 1...Sc7
        • 2.b5#

There are these versions: 104555

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(e);SBLOCK::R1(E)
  • Tries
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XP(C)::QAR2(A)
        • S(e);SBLOCK::R1(E)
      • Refutation
        • B(b);XB(D)
    • Try
      • B(D);CHECK
      • Vars
        • P(d);OGATE,XB(D)::QAB1(A),XP(d)
      • Refutation
        • K(c);S_FLIGHT,XR(E)
    • Try
      • Q(A);
      • Threat
        • QAB(A)+R(E)
      • Vars
        • P(a);OGATE,XP(C)::QAB(A)
        • S(e);SBLOCK::QAB(A)+R(E),DCHECK
      • Refutation
        • S(e);
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XP(f)
      • Vars
        • S(e);SBLOCK::R1(E)
        • S(e);N_GUARD::QAR2(A)
        • P(f);N_GUARD::QAB1(A)
      • Refutation
        • P(d);
    • Try
      • Q(A);
      • Threat
        • QAR(A)+B(D)
      • Vars
        • B(b);::QAR(A)+B(D),XB(b)
        • S(e);SBLOCK::R1(E)
      • Refutation
        • P(a);XP(C)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • P(f);N_GUARD::QAB1(A)
      • Refutation
        • B(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • S(e);OGATE,XP(G)::QAB(A)
      • S(e);SBLOCK::R1(E)
      • S(e);OGATE::QAR(A)+P(F)
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