MESON Chess Problem Database

Problem Display
PID: 108255 (3K4/4pQ2/7k/6b1/8/4B3/6p1/5R2 w - - 0 1)

Dorion, Francois

La Presse, 1980

3K4/4pQ2/7k/6b1/8/4B3/6p1/5R2

#2

4 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Bxf4#
    • 1...e5+
      • 2.Rf6#
    • 1...e6+
      • 2.Rf6#
  • Tries
    • 1.Qg7+?
      • 1...Kh5
        • 2.Qxg5#
      • 1...Kxg7!
  • Keys
    • 1.Rf4!
      • threat
        • 2.Rh4#
      • 1...e5+
        • 2.Rf6#
      • 1...e6+
        • 2.Rf6#
      • 1...Bxf4
        • 2.Bxf4#
      • 1...Bh4
        • 2.Rxh4#
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(b);OGATEB::B(B),XB(b)
    • P(d);CHECK,N_GUARD::R(A)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR1(C),XB(b)
      • Refutation
        • K(c);N_SPINB(b),S_FLIGHT,XQ(C)
  • Actual
    • R(A);N_PINB(b)
    • Threat
      • R(A)
    • Vars
      • P(d);CHECK,N_GUARD::R(A)
      • B(b);OGATE,P_SPINB(b),XR(A)::B(B),XB(b)
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