MESON Chess Problem Database

Problem Display
PID: 256998 (3KBQ2/4p3/2bR1r2/5kb1/2N3R1/4n2P/7N/2B5 w - - 0 1)

Coello Alonso, Jose Antonio

Zurutuza, Imanol

Problemas, 2022

3KBQ2/4p3/2bR1r2/5kb1/2N3R1/4n2P/7N/2B5

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Bg6#
    • 1...Bh4
      • 2.Bg6#
    • 1...Bh6
      • 2.Bg6#
  • Tries
    • 1.Qxf6+?
      • 1...Bxf6
        • 2.Bg6#
      • 1...exf6!
  • Keys
    • 1.Qxe7!
      • threat
        • 2.Qe5#
      • 1...Rxd6+
        • 2.Sxd6#
      • 1...Bxe8
        • 2.Qe4#
      • 1...Sxc4
        • 2.Rxg5#
      • 1...Sxg4
        • 2.hxg4#
      • 1...Re6
        • 2.Qxg5#
      • 1...Rg6
        • 2.Bxg6#
      • 1...Rh6
        • 2.Qxg5#
      • 1...Rf7
        • 2.Qxg5#
      • 1...Rf8
        • 2.Qxg5#
      • 1...Bf4
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 2
  • Sets
    • B(c);::B(H)
  • Tries
    • Try
      • Q(I);CHECK,XR(e)
      • Vars
        • B(c);XQ(I)::B(H)
      • Refutation
        • P(f);XQ(I)
  • Actual
    • Q(I);N_PINR(e),XP(f)
    • Threat
      • QAR1(I)
    • Vars
      • R(e);CHECK,P_PINQ(I),XR(F)::S(D),XR(e)
      • B(d);N_GUARD,XB(H)::QAB1(I)
      • S(a);XS(D)::R1(E),XB(c)
      • S(a);OGATE,XR(E)::P(C),XS(a)
      • R(e);OGATE,P_PINQ(I)::QAR1(I),XB(c)
      • R(e);N_GUARD,P_PINQ(I)::B(H),XR(e)
      • R(e);OGATE,P_PINB(H),P_PINQ(I)::QAR1(I),XB(c)
      • B(c);N_GUARD::R1(F),XR(e)
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