MESON Chess Problem Database

Problem Display
PID: 15231 (8/B1p5/1rPp4/bQ1p1RN1/1npk4/p2p4/B2P4/1KN5 w - - 0 1)

Caillaud, Michel

Mat, 1981

8/B1p5/1rPp4/bQ1p1RN1/1npk4/p2p4/B2P4/1KN5

#2

9 + 10

3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Sxa2
      • 2.Rxd5#
    • 1...Sc2
      • 2.Rxd5#
    • 1...Sa6
      • 2.Rxd5#
    • 1...Sxc6
      • 2.Rxd5#
    • 1...c3
      • 2.Sb3#
  • Tries
    • 1.Ka1?
      • 1...Sxa2
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Sxc6
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Sa6
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...c3
        • 2.Sb3#
      • 1...Sc2+!
    • 1.Bxc4?
      • threat
        • 2.Sb3#
      • 1...dxc4
        • 2.Rf4#
      • 1...a2+!
  • Keys
    • 1.Qa4!
      • 1...Sxa2+
        • 2.Sb3#
      • 1...Sc2+
        • 2.Sb3#
      • 1...Sa6+
        • 2.Sb3#
      • 1...Sxc6+
        • 2.Sb3#
      • 1...Kc5
        • 2.Se6#
      • 1...c3
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,P_PINQ(E),XB(C)::R1(F),XP(g)
    • S(c);N_GUARD,P_PINQ(E)::R1(F),XP(g)
    • S(c);N_GUARD,P_PINQ(E),XP(H)::R1(F),XP(g)
    • P(d);N_GUARD::S(B)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(d);N_GUARD::S(B)
      • Refutation
        • S(c);CHECK
    • Try
      • B(C);XP(d)
      • Threat
        • S(B)
      • Vars
        • P(g);XB(C)::R(F)
      • Refutation
        • P(a);CHECK
  • Actual
    • Q(E);
    • Vars
      • S(c);CHECK,P_SPINP(d),XB(C)::S(B)
      • S(c);CHECK,P_SPINP(d)::S(B)
      • S(c);CHECK,P_SPINP(d),XP(H)::S(B)
      • K(e);P_SPINP(g),S_FLIGHT::S(G)
      • P(d);P_SPINS(c)::R1(F),XP(g)
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