MESON Chess Problem Database

Problem Display
PID: 18356 (Qb3B2/1RNp4/1P6/2n2p2/1k2b2R/8/3P3K/2N2B2 w - - 0 1)

Diot, Roger

5th Place, Match: France - Yugoslavia, 1955

Qb3B2/1RNp4/1P6/2n2p2/1k2b2R/8/3P3K/2N2B2

#2

10 + 6

3105 FIDE Album (1945-1955) 1964
5454 Near Snap 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc7+
      • 2.bxc7#
    • 1...d6
      • 2.Sd5#
  • Tries
    • 1.Rf4?
      • threat
        • 2.Sd5#
      • 1...Bxc7
        • 2.bxc7#
      • 1...d5
        • 2.Sxd5#
      • 1...Ba7!
    • 1.Rxb8?
      • threat
        • 2.Sd5#
      • 1...d5
        • 2.Sxd5#
      • 1...f4!
    • 1.Qa1?
      • 1...Bxc7+
        • 2.bxc7#
      • 1...f4
        • 2.Sa6#
      • 1...Ba7
        • 2.Sd5#
        • 2.Sa6#
        • 2.bxa7#
      • 1...d6
        • 2.Sd5#
      • 1...d5!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Sd3#
      • 1...Bxc7+
        • 2.bxc7#
      • 1...f4
        • 2.Sa6#
      • 1...d6
        • 2.Sd5#

This anticipates 99422(1983)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(f);CHECK,OGATE,XS(H)::R(G)+P(F),XB(f)
    • P(e);N_PINS(H),N_SPINS(c)::S(H)
  • Tries
    • Try
      • R(E);N_SPINS(H)
      • Threat
        • S(H)
      • Vars
        • B(f);OGATE,P_PINR(E),XS(H)::R(G)+P(F),XB(f)
        • P(e);::S(H),XP(e)
      • Refutation
        • B(f);
    • Try
      • R(G);N_SPINS(H),XB(f)
      • Threat
        • S(H)
      • Vars
        • P(e);::S(H),XP(e)
      • Refutation
        • P(d);N_SPINB(b)
    • Try
      • Q(I);
      • Vars
        • B(f);CHECK,OGATE,XS(H)::R(G)+P(F),XB(f)
        • P(d);N_PINS(H),N_SPINB(b)::S(H)
        • P(e);N_PINS(H),N_SPINS(c)::S(H)
      • Refutation
        • P(e);
  • Actual
    • Q(I);
    • Threat
      • S(A)
    • Vars
      • B(f);CHECK,OGATE,XS(H)::R(G)+P(F),XB(f)
      • P(d);N_PINS(H),N_SPINB(b)::S(H)
      • P(e);N_PINS(H),N_SPINS(c)::S(H)
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