MESON Chess Problem Database

Problem Display
PID: 188623 (8/B4Q1b/2P5/4p3/4kp2/8/1KP5/6N1 w - - 0 1)

Stewart, John

To Alain White, 1945

8/B4Q1b/2P5/4p3/4kp2/8/1KP5/6N1

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Qc4#
    • 1...f3
      • 2.Qxf3#
  • Tries
    • 1.Qb3?
      • threat
        • 2.Qd3#
      • 1...f3
        • 2.Qxf3#
      • 1...Kf5!
  • Keys
    • 1.c4!
      • threat
        • 2.Qxh7#
      • 1...Kd3
        • 2.Qd5#
      • 1...Bg6
        • 2.Qxg6#
      • 1...Bf5
        • 2.Qd5#
      • 1...Bg8
        • 2.Qg6#
      • 1...f3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(d);SBLOCK::QAR2(F)
    • P(b);OGATE::QAB1(F),XP(b)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Vars
        • P(b);::QAB1(F),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(C);
    • Threat
      • QAB(F),XB(d)
    • Vars
      • K(a);S_FLIGHT::QAR2(F)
      • B(d);N_GUARD::QAB(F),XB(d)
      • B(d);SBLOCK::QAB1(F)
      • B(d);N_GUARD::QAB(F)
      • P(b);OGATE::QAB1(F),XP(b)
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