MESON Chess Problem Database

Problem Display
PID: 247860 (2R5/8/5K2/2pk4/1p3Q2/8/8/7b w - - 0 1)

Belchikov, Nikolai Ivanovich

Uralski Problemist, 2006

2R5/8/5K2/2pk4/1p3Q2/8/8/7b

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qe5#
  • Tries
    • 1.Qc4+?
      • 1...Kd6
        • 2.Qe6#
      • 1...Kxc4!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Rxc5#
      • 1...Kd6
        • 2.Qe6#
      • 1...Be4
        • 2.Qxc5#
      • 1...c4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);::QAR1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • K(d);P_SPINP(c),S_FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(d);P_SPINP(c),S_FLIGHT::R1(C),XP(c)
      • K(d);P-FLIGHT::QAR1(A)
      • B(a);SBLOCK::QAR1(A),XP(c)
      • P(c);::QAR1(A)
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