MESON Chess Problem Database

Problem Display
PID: 218436 (1b6/2p2BQ1/p3RP2/1N1k1b2/8/1P1N2K1/2n5/3R4 w - - 0 1)

Coello Alonso, Jose Antonio

BCPS Website, 2020

1b6/2p2BQ1/p3RP2/1N1k1b2/8/1P1N2K1/2n5/3R4

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd3
      • 2.Qg5#
    • 1...Be4
      • 2.Rxa6#
      • 2.Rb6#
      • 2.Rd6#
    • 1...Sd4
      • 2.Sc3#
    • 1...c5+
      • 2.Sf4#
    • 1...c6+
      • 2.Re5#
  • Tries
    • 1.Kf4?
      • threat
        • 2.Rd6#
      • 1...Bxd3
        • 2.Qg5#
      • 1...Bxe6
        • 2.Qg2#
      • 1...axb5!
    • 1.Bg8?
      • threat
        • 2.Qd7#
      • 1...c5+
        • 2.Sf4#
      • 1...c6+
        • 2.Re5#
      • 1...Bxd3
        • 2.Qg5#
      • 1...Bxe6!
    • 1.Qg8?
      • threat
        • 2.Qd8#
      • 1...c5+
        • 2.Sf4#
      • 1...c6+
        • 2.Re5#
      • 1...Bxd3
        • 2.Qg5#
      • 1...Bxe6!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qd8#
      • 1...c5+
        • 2.Sf4#
      • 1...c6+
        • 2.Re5#
      • 1...Bxd3
        • 2.Qh5#
      • 1...Bxe6
        • 2.Qh1#

This is a version of 218435

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(c);OGATEB,P_SPINB(c),XS(C)::QAR(I)
    • S(a);SBLOCK::S(E)
    • P(e);CHECK,SBLOCK::R(A)+S(C),DCHECK
    • P(e);CHECK,SBLOCK::B(H)+R(F),DCHECK
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • B(H)+R(F),DCHECK
      • Vars
        • B(c);OGATEB,P_SPINB(c),XS(C)::QAR(I)
        • B(c);N_GUARD,P_SPINB(c),XR(F)::QAB(I)
      • Refutation
        • P(d);XS(E)
    • Try
      • B(H);
      • Threat
        • QAR2(I)
      • Vars
        • P(e);CHECK,SBLOCK::R(A)+S(C),DCHECK
        • P(e);CHECK,SBLOCK::B(H)+R(F),DCHECK
        • B(c);OGATEB,P_SPINB(c),XS(C)::QAR(I)
      • Refutation
        • B(c);P_SPINB(c),XR(F)
    • Try
      • Q(I);
      • Threat
        • QAR(I)
      • Vars
        • P(e);CHECK,SBLOCK::R(A)+S(C),DCHECK
        • P(e);CHECK,SBLOCK::B(H)+R(F),DCHECK
        • B(c);OGATEB,P_SPINB(c),XS(C)::QAR(I)
      • Refutation
        • B(c);P_SPINB(c),XR(F)
  • Actual
    • Q(I);
    • Threat
      • QAR(I)
    • Vars
      • P(e);CHECK,SBLOCK::R(A)+S(C),DCHECK
      • P(e);CHECK,SBLOCK::B(H)+R(F),DCHECK
      • B(c);OGATEB,P_SPINB(c),XS(C)::QAR(I)
      • B(c);N_GUARD,P_SPINB(c),XR(F)::QAB(I)
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