MESON Chess Problem Database

Problem Display
PID: 172518 (8/3KBkrQ/8/6p1/6P1/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2002

8/3KBkrQ/8/6p1/6P1/8/8/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Kd8?
      • 1...Ke6
        • 2.Qf5#
      • 1...Rxh7!
    • 1.Qh6?
      • threat
        • 2.Qe6#
      • 1...Rg6
        • 2.Qf8#
      • 1...Rh7
        • 2.Qxh7#
      • 1...Rg8
        • 2.Qf6#
      • 1...Kg8!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qe8#
      • 1...Kg6
        • 2.Qh5#
      • 1...Rg6
        • 2.Qf8#
      • 1...Rh7
        • 2.Qxh7#
      • 1...Rg8
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);N_SPINR(c),S_FLIGHT::QAB1(D)
      • Refutation
        • R(c);N_SPINR(c),XQ(D)
    • Try
      • Q(D);N_PINR(c)
      • Threat
        • QAB1(D)
      • Vars
        • R(c);OGATE,SBLOCK::QAR1(D)
        • R(c);OGATEB::QAR2(D),XR(c)
        • R(c);SBLOCK::QAR1(D)
      • Refutation
        • K(b);P_PINB(C),S_FLIGHT
  • Actual
    • Q(D);N_PINR(c)
    • Threat
      • QAB1(D)
    • Vars
      • K(b);P_PINB(C),S_FLIGHT::QAB1(D)
      • R(c);SBLOCK::QAR1(D)
      • R(c);OGATEB::QAR2(D),XR(c)
      • R(c);OGATE,SBLOCK::QAR1(D)
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