MESON Chess Problem Database

Problem Display
PID: 108783 (6b1/8/rB1N3K/1pQpk1NR/p5P1/2P1b1p1/8/3BRn2 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Thema Danicum, 1985

6b1/8/rB1N3K/1pQpk1NR/p5P1/2P1b1p1/8/3BRn2

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sh3#
  • Tries
    • 1.Sc4+?
      • 1...Kf4
        • 2.Qd6#
        • 2.Qc7#
      • 1...Kf6
        • 2.Bd8#
      • 1...bxc4!
    • 1.Sf5?
      • threat
        • 2.Qd4#
        • 2.Qd6#
      • 1...Kf4
        • 2.Qd6#
        • 2.Qc7#
      • 1...Kf6
        • 2.Qe7#
      • 1...Be6
        • 2.Qd4#
      • 1...Rxb6+!
    • 1.Sf7+?
      • 1...Kf4
        • 2.Qd6#
        • 2.Qc7#
      • 1...Kf6
        • 2.Bd8#
        • 2.Qd6#
      • 1...Bxf7!
    • 1.Sc8?
      • threat
        • 2.Qd4#
        • 2.Qd6#
      • 1...Kf4
        • 2.Qd6#
        • 2.Qc7#
      • 1...Kf6
        • 2.Qe7#
      • 1...Be6
        • 2.Qd4#
      • 1...Rxb6+!
    • 1.Se8?
      • threat
        • 2.Qd4#
        • 2.Qd6#
        • 2.Qc7#
      • 1...Kf4
        • 2.Qd6#
        • 2.Qc7#
      • 1...Ra7
        • 2.Qd4#
        • 2.Qd6#
      • 1...Rxb6+!
    • 1.Rxe3+?
      • 1...Kf4
        • 2.Sh3#
        • 2.Qd4#
      • 1...Kf6
        • 2.Se8#
        • 2.Bd8#
        • 2.Qd4#
      • 1...Sxe3!
  • Keys
    • 1.Bc7!
      • threat
        • 2.Qd4#
      • 1...Rxd6+
        • 2.Qxd6#
      • 1...Kf4
        • 2.Sh3#
      • 1...Kf6
        • 2.Se8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(g);N_PINS(F),N_SPINB(b),N_SPINP(f),S_FLIGHT::S(F)
  • Tries
    • Try
      • S(I);CHECK,P_SPINB(H)
      • Vars
        • K(g);N_PINB(H),N_SPINB(b),N_SPINP(f),S_FLIGHT::B(H)
      • Refutation
        • P(e);XS(I)
    • Try
      • S(I);P_SPINB(H)
      • Threat
        • DUALS(2)
      • Vars
        • K(g);N_PINB(H),N_SPINB(b),N_SPINP(f),S_FLIGHT::QAB1(E)
        • B(i);N_PINB(H)::QAB1(E)
      • Refutation
        • R(h);CHECK,XB(H)
    • Try
      • S(I);CHECK,P_SPINB(H)
      • Refutation
        • B(i);XS(I)
    • Try
      • S(I);P_SPINB(H)
      • Threat
        • DUALS(2)
      • Vars
        • K(g);N_PINB(H),N_SPINB(b),N_SPINP(f),S_FLIGHT::QAB1(E)
        • B(i);N_PINB(H)::QAB1(E)
      • Refutation
        • R(h);CHECK,XB(H)
    • Try
      • S(I);P_SPINB(H)
      • Threat
        • DUALS(3)
      • Refutation
        • R(h);CHECK,XB(H)
    • Try
      • R(B);CHECK,N_SPINS(F),XB(b)
      • Refutation
        • S(a);XR(B)
  • Actual
    • B(H);
    • Threat
      • QAB1(E)
    • Vars
      • R(h);CHECK,OGATE,P_SPINR(h),XS(I)::QAB1(E),XR(h)
      • K(g);N_PINS(F),N_SPINB(b),N_SPINP(f),P_PINS(I),S_FLIGHT::S(F)
      • K(g);N_SPINB(b),N_SPINP(f),S_FLIGHT::S(I)
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