MESON Chess Problem Database

Problem Display
PID: 259451 (8/3P4/r2p4/3kbQ1K/1B6/1N6/6p1/2R5 w - - 0 1)

Cheylan, Yves

Comm., Die Schwalbe, 1981

8/3P4/r2p4/3kbQ1K/1B6/1N6/6p1/2R5

#2

6 + 5

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.d8Q?
      • threat
        • 2.Rc5#
        • 2.Qg8#
      • 1...g1B
        • 2.Qg8#
      • 1...g1R
        • 2.Rc5#
      • 1...Ra5
        • 2.Qxa5#
        • 2.Qxd6#
        • 2.Qg8#
      • 1...Rc6
        • 2.Qg8#
      • 1...Ra7
        • 2.Rc5#
        • 2.Qxd6#
      • 1...Ra8
        • 2.Rc5#
        • 2.Qxd6#
        • 2.Qxa8#
      • 1...g1Q!
  • Keys
    • 1.Bxd6!
      • threat
        • 2.Qxe5#
      • 1...Kxd6
        • 2.d8Q#
      • 1...Rxd6
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(F);P_PINP(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::QAB(F)
        • P(a);::R1(A)
        • R(d);::QAB(F)
      • Refutation
        • P(a);
  • Actual
    • B(C);XP(e)
    • Threat
      • QAR1(D),XB(c)
    • Vars
      • K(b);N_SPINB(c),P-FLIGHT,XB(C)::P=Q
      • R(d);SBLOCK,XB(C)::R1(A)
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