MESON Chess Problem Database

Problem Display
PID: 171370 (1nK2Q2/kB6/1p6/2P5/8/8/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Minimat, 1995

1nK2Q2/kB6/1p6/2P5/8/8/8/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...bxc5
      • 2.Qxc5#
  • Tries
    • 1.Kc7?
      • threat
        • 2.Qxb8#
        • 2.cxb6#
      • 1...bxc5
        • 2.Qxc5#
        • 2.Qxb8#
      • 1...Sc6
        • 2.Qa8#
        • 2.cxb6#
      • 1...Sd7
        • 2.Qa8#
      • 1...b5
        • 2.Qxb8#
      • 1...Sa6+!
  • Keys
    • 1.Qf2!
      • threat
        • 2.cxb6#
      • 1...bxc5
        • 2.Qxc5#
      • 1...Sd7
        • 2.Qa2#
      • 1...b5
        • 2.c6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE,XP(A)::QAB(D),XP(a)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(c);OGATE::QAR1(D)
        • P(a);::QAB1(D),XS(c)
      • Refutation
        • S(c);CHECK
  • Actual
    • Q(D);
    • Threat
      • P(A),XP(a)
    • Vars
      • P(a);OGATE,P_SPINP(a),XP(A)::QAB(D),XP(a)
      • S(c);N_GUARD::QAR(D)
      • P(a);::QAB(D)+P(A)
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