MESON Chess Problem Database

Problem Display
PID: 172496 (8/8/K7/2pk4/2RP4/8/2P1Q3/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2001

8/8/K7/2pk4/2RP4/8/2P1Q3/8

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rxc5+?
      • 1...Kxd4
        • 2.Qe5#
      • 1...Kd6!
    • 1.Qe5+?
      • 1...Kxc4
        • 2.Qxc5#
      • 1...Kc6!
  • Keys
    • 1.Qe7!
      • 1...Kxc4
        • 2.Qxc5#
      • 1...Kc6
        • 2.Rxc5#
      • 1...cxd4
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK,XP(a)
      • Vars
        • K(b);P-FLIGHT,XP(D)::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(C)::QAR1(B),XP(a)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(b);S_FLIGHT,XR(C)::QAR1(B),XP(a)
      • K(b);P_SPINP(a),S_FLIGHT::R1(C),XP(a)
      • P(a);SBLOCK,XP(D)::R1(C)
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