MESON Chess Problem Database

Problem Display
PID: 278001 (n6Q/1B3p2/3Bp3/8/n1kP1pR1/1R6/P2P2p1/5bK1 w - - 0 1)

Basisty, Mark Borisovich

Zamanov, Vidadi

Comm., Pat a Mat, 2015

n6Q/1B3p2/3Bp3/8/n1kP1pR1/1R6/P2P2p1/5bK1

#2

9 + 8

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Rb4#
    • 1...f3
      • 2.d5#
  • Tries
    • 1.Rxf4?
      • threat
        • 2.d5#
      • 1...Bd3
        • 2.Rb4#
      • 1...Sc5
        • 2.dxc5#
      • 1...e5
        • 2.dxe5#
      • 1...Sc3!
    • 1.Qe5?
      • threat
        • 2.Ba6#
      • 1...Sc3
        • 2.Rxc3#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7!
    • 1.Qc8+?
      • 1...Kxd4
        • 2.Rxf4#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7!
    • 1.d5?
      • threat
        • 2.Rxf4#
      • 1...exd5
        • 2.Ba6#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Bd3
        • 2.Rb4#
      • 1...Sc5
        • 2.Qc3#
      • 1...e5!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Rb4#
      • 1...Kxd4
        • 2.Rxf4#
      • 1...Sc5
        • 2.Qc3#
      • 1...f3
        • 2.d5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::R1(D)
    • P(e);::R(F)+P(E)
  • Tries
    • Try
      • R(F);XP(e)
      • Threat
        • R(F)+P(E)
      • Vars
        • B(a);SBLOCK::R1(D)
        • S(c);OGATE::R(F)+P(E),XS(c)
        • P(f);OGATE::R(F)+P(E),XP(f)
      • Refutation
        • S(c);
    • Try
      • Q(I);
      • Threat
        • B(H)
      • Vars
        • S(c);N_GUARD::R1(D),XS(c)
        • S(c);N_GUARD::QAR1(I),XS(c)
      • Refutation
        • S(h);
    • Try
      • Q(I);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINP(e),S_CUTS(c),S_CUTS(h),XP(E)::R(F),XP(e)
        • S(c);N_GUARD,P_SPINS(c)::QAR1(I),XS(c)
      • Refutation
        • S(h);P_SPINS(h)
    • Try
      • P(E);P_PINP(e)
      • Threat
        • R(F),XP(e)
      • Vars
        • P(f);SBLOCK,XP(E)::B(H)
        • S(c);N_GUARD::QAR1(I),XS(c)
        • B(a);SBLOCK::R1(D)
        • S(c);N_GUARD::QAR1(I)
      • Refutation
        • P(f);
  • Actual
    • Q(I);
    • Threat
      • R1(D)
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINP(e),XP(E)::R(F),XP(e)
      • S(c);N_GUARD::QAR1(I)
      • P(e);::R(F)+P(E)
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