MESON Chess Problem Database

Problem Display
PID: 78252 (4n3/3p1R2/2p2p2/R1pk1P2/4n3/1P1p1K2/7Q/6BB w - - 0 1)

Shire, David J

The Problemist Supplement, 2007

4n3/3p1R2/2p2p2/R1pk1P2/4n3/1P1p1K2/7Q/6BB

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Rxc5#
    • 1...S4d6
      • 2.Rxc5#
  • Tries
    • 1.Rxd7+?
      • 1...S4d6
        • 2.Ke3#
        • 2.Kf4#
        • 2.Kg4#
        • 2.Rxc5#
      • 1...S8d6!
  • Keys
    • 1.Kf4!
      • 1...Kd6
        • 2.Kxe4#
      • 1...Sd6
        • 2.Rxc5#
      • 1...Sc7
        • 2.Rxd7#
      • 1...Sg7
        • 2.Rxd7#
      • 1...d2
        • 2.Qxd2#
      • 1...d6
        • 2.Bxe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD::R1(F),XP(c)
  • Tries
    • Try
      • R(H);CHECK,XP(g)
      • Refutation
        • S(h);P_SPINS(h)
  • Actual
    • K(E);P-FLIGHT,P_PINS(b)
    • Vars
      • K(d);N_SPINP(c),N_SPINS(b),P-FLIGHT::QAB(C)+K(E),XS(b)
      • S(h);SBLOCK::R1(F),XP(c)
      • S(h);N_GUARD::R(H),XP(g)
      • P(a);OGATEB::QAR(C),XP(a)
      • P(g);SBLOCK::B(B),XS(b)
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