MESON Chess Problem Database

Problem Display
PID: 75677 (1KB1nN2/5pr1/2Pp4/1p1kP1n1/4pR2/1PQ1Bp2/2P5/3r4 w - - 0 1)

Chepizhni, Viktor Ivanovich

3rd Prize, Simhovich MT, 1995

1KB1nN2/5pr1/2Pp4/1p1kP1n1/4pR2/1PQ1Bp2/2P5/3r4

#2

10 + 10

56 The Problemist 2007
6167 Viktor Chepizhny 2007
136 Problem Observer 2008

SOLUTION

  • SOUND
  • Sets
    • 1...dxe5
      • 2.Qc5#
  • Tries
    • 1.Bb7?
      • threat
        • 2.c7#
      • 1...dxe5
        • 2.Qc5#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Sc7!
    • 1.Rf5?
      • threat
        • 2.e6#
      • 1...dxe5
        • 2.Qc5#
      • 1...Se6!
    • 1.Qd2+?
      • 1...Kxe5
        • 2.Rf5#
      • 1...Kxc6
        • 2.Bb7#
        • 2.Bd7#
      • 1...Rxd2!
    • 1.Qd4+?
      • 1...Kxc6
        • 2.Bb7#
        • 2.Bd7#
      • 1...Rxd4!
    • 1.Qc4+?
      • 1...Kxe5
        • 2.Sd7#
        • 2.Rf5#
      • 1...bxc4!
    • 1.e6?
      • threat
        • 2.Rf5#
      • 1...f5
        • 2.Rxf5#
      • 1...fxe6!
    • 1.c7?
      • threat
        • 2.Bb7#
      • 1...dxe5
        • 2.Qc5#
      • 1...Rd4!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qxb5#
      • 1...Kxe5
        • 2.Rf5#
      • 1...Kxc6
        • 2.Bb7#
      • 1...dxe5
        • 2.Qc5#
      • 1...Se6
        • 2.Qxe4#
      • 1...Sc7
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(g);N_GUARD,SBLOCK,XP(F)::QAR1(C)
  • Tries
    • Try
      • B(I);
      • Threat
        • B(I)+P(G)
      • Vars
        • P(g);N_GUARD,SBLOCK,XP(F)::QAR1(C)
        • R(a);N_GUARD::QAR1(C),XR(a)
      • Refutation
        • S(j);
    • Try
      • R(E);
      • Threat
        • R(E)+P(F)
      • Vars
        • P(g);N_GUARD,P_SPINP(g),XP(F)::QAR1(C)
      • Refutation
        • S(f);
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);P-FLIGHT,XP(F)::R1(E)
      • Refutation
        • R(a);XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • R(a);XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • P(d);XQ(C)
    • Try
      • P(F);
      • Threat
        • R(E)
      • Vars
        • P(h);::R(E),XP(h)
      • Refutation
        • P(h);XP(F)
    • Try
      • P(G);
      • Threat
        • B(I)
      • Vars
        • P(g);N_GUARD,SBLOCK,XP(F)::QAR1(C)
      • Refutation
        • R(a);
  • Actual
    • Q(C);
    • Threat
      • QAR2(C),XP(d)
    • Vars
      • K(e);OGATEB,P-FLIGHT,XP(F)::R1(E)
      • K(e);OGATEB,S_FLIGHT,XP(G)::B(I)
      • P(g);N_GUARD,SBLOCK,XP(F)::QAR1(C)
      • S(f);N_GUARD::QAB1(C),XP(c)
      • S(j);N_GUARD::QAR1(C),XP(g)
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