MESON Chess Problem Database

Problem Display
PID: 168327 (1N5Q/3R4/1pPp4/1k2N3/1p3K2/1P2P3/8/8 w - - 0 1)

Petite, Efren

Umenie 64, 1998

1N5Q/3R4/1pPp4/1k2N3/1p3K2/1P2P3/8/8

#2

8 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...dxe5+
      • 2.Qxe5#
    • 1...d5
      • 2.Rxd5#
  • Tries
    • 1.Sd3?
      • 1...d5
        • 2.Rxd5#
      • 1...Ka5!
    • 1.Sc4?
      • 1...d5
        • 2.Rxd5#
      • 1...Kc5!
  • Keys
    • 1.Qh5!
      • 1...dxe5+
        • 2.Qxe5#
      • 1...Ka5
        • 2.Sc4#
      • 1...Kc5
        • 2.Sd3#
      • 1...d5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(d);CHECK,OGATE,XS(D)::QAR(H),XP(d)
    • P(d);OGATE::R(F),XP(d)
  • Tries
    • Try
      • S(D);
      • Vars
        • P(d);OGATE::R(F),XP(d)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(D);
      • Vars
        • P(d);OGATE::R(F),XP(d)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(H);
    • Vars
      • P(d);CHECK,OGATE,P_SPINP(d),XS(D)::QAR(H),XP(d)
      • K(b);P-FLIGHT::QAR(H)+S(D),DCHECK
      • P(d);OGATE::R(F),XP(d)
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