MESON Chess Problem Database

Problem Display
PID: 91654 (4K3/2p1Np2/1pP2rR1/1P1Pk1p1/2B5/QpNP4/8/2B5 w - - 0 1)

Gamza, Grigory Stepanovich

Probleemblad, 1993

4K3/2p1Np2/1pP2rR1/1P1Pk1p1/2B5/QpNP4/8/2B5

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Se2?
      • threat
        • 2.Bb2#
      • 1...b2
        • 2.Bxb2#
      • 1...Rf4!
    • 1.Se4?
      • threat
        • 2.Qb2#
      • 1...Kd4
        • 2.Qb2#
      • 1...b2
        • 2.Qxb2#
        • 2.Qc3#
      • 1...Rf2!
    • 1.Bb2?
      • threat
        • 2.Se2#
      • 1...Kd4
        • 2.Sd1#
      • 1...Rf4
        • 2.Se4#
      • 1...Kf4!
    • 1.Rxg5+?
      • 1...Kd4
        • 2.Se2#
      • 1...Rf5!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Se4#
      • 1...Kd4
        • 2.Sa4#
        • 2.Se4#
      • 1...Kd6
        • 2.Se4#
      • 1...Rf2
        • 2.Se2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • B(A)
      • Vars
        • P(a);::B(A),XP(a)
      • Refutation
        • R(e);
    • Try
      • S(C);
      • Threat
        • QAB(B)
      • Vars
        • K(b);S_FLIGHT::QAB(B)
      • Refutation
        • R(e);
    • Try
      • B(A);
      • Threat
        • B(A)+S(C)
      • Vars
        • K(b);S_FLIGHT::B(A)+S(C)
        • R(e);SBLOCK::B(A)+S(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(I);CHECK,XP(c)
      • Vars
        • K(b);S_FLIGHT::S(C)
      • Refutation
        • R(e);P_SPINR(e)
  • Actual
    • Q(B);
    • Threat
      • QAB(B)+S(C)
    • Vars
      • K(b);P_SPINR(e),S_FLIGHT::S(C)
      • R(e);::QAB(B)+S(C)
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