MESON Chess Problem Database

Problem Display
PID: 101066 (b4rB1/K3PP1r/1p2k3/1Q1NP1R1/2pp1B2/b7/8/4R3 w - - 0 1)

Lindmark, CE

Good Companions, 1919

b4rB1/K3PP1r/1p2k3/1Q1NP1R1/2pp1B2/b7/8/4R3

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb8
      • 2.f8S#
    • 1...Rc8
      • 2.f8S#
    • 1...Rd8
      • 2.exd8S#
      • 2.f8S#
    • 1...Re8
      • 2.f8S#
    • 1...Bc1
      • 2.exf8S#
    • 1...Bb2
      • 2.exf8S#
    • 1...Bd6
      • 2.exd6#
    • 1...Bxe7
      • 2.Sc7#
  • Tries
    • 1.Qc6+?
      • 1...Bd6
        • 2.Qxd6#
        • 2.exd6#
        • 2.exf8S#
      • 1...Bxc6!
    • 1.e8Q+?
      • 1...Be7
        • 2.Sc7#
        • 2.Qbd7#
        • 2.Qed7#
        • 2.Qxe7#
      • 1...Rxe8!
    • 1.e8R+?
      • 1...Be7
        • 2.Sc7#
        • 2.Rxe7#
      • 1...Rxe8!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Sc7#
      • 1...Kxd5
        • 2.e6#
      • 1...Rxe8
        • 2.f8S#
      • 1...Bxd5
        • 2.exf8S#
      • 1...Bd6
        • 2.exd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(h);OGATE::P=S
    • B(a);N_GUARD::PXR(h)=S
    • B(a);OGATE::R(A)+P(E),XB(a)
    • B(a);SBLOCK,XP(H)::S(D)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • B(g);XQ(C)
    • Try
      • P(H);CHECK,P_SPINP(I)
      • Refutation
        • R(h);XQ(H)
    • Try
      • P(H);CHECK,P_SPINP(I)
      • Refutation
        • R(h);XR(H)
  • Actual
    • Q(C);
    • Threat
      • S(D)
    • Vars
      • K(e);OGATE,S_FLIGHT,XS(D)::R(F)+P(E)
      • R(h);OGATE,XQ(C)::P=S
      • B(g);SBLOCK,XS(D)::PXR(h)=S
      • B(a);OGATE::R(A)+P(E),XB(a)
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Developed and maintained by Brian Stephenson.
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