MESON Chess Problem Database

Problem Display
PID: 264481 (b2b2B1/5q2/8/1N1r4/6PP/1R4RK/k3PQ1P/r7 w - - 0 1)

Chepizhni, Viktor Ivanovich

The Problemist, 1992

b2b2B1/5q2/8/1N1r4/6PP/1R4RK/k3PQ1P/r7

#2

10 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Qa7+?
      • 1...Ba5
        • 2.Qxa5#
      • 1...Qxa7!
    • 1.e4+?
      • 1...Rd2
        • 2.Qxd2#
      • 1...Qxf2!
  • Keys
    • 1.Rb4!
      • threat
        • 2.Ra3#
      • 1...Rxb5
        • 2.e4#
      • 1...Qf3
        • 2.exf3#
      • 1...Qa7
        • 2.e3#
      • 1...Rd3
        • 2.exd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAR(B),XB(f)
      • Refutation
        • Q(d);XQ(B)
    • Try
      • P(A);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR(B),XR(c)
      • Refutation
        • Q(d);XQ(B)
  • Actual
    • R(D);
    • Threat
      • R1(E)
    • Vars
      • R(c);N_GUARD,P_SPINQ(d),XS(I)::QAR(B)+P(A)
      • Q(d);OGATE,P_PINR(E),P_SPINR(c)::QAR(B)+P(A),XQ(d)
      • Q(d);N_GUARD,P_SPINR(c)::QAR(B)+P(A)
      • R(c);OGATE,P_PINR(E),P_SPINQ(d)::QAR(B)+P(A),XR(c)
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