MESON Chess Problem Database

Problem Display
PID: 198613 (n7/3pp3/3pN1K1/N2kbQ2/3P1p2/3p1p2/5P2/3R4 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Problemskak, 2011

n7/3pp3/3pN1K1/N2kbQ2/3P1p2/3p1p2/5P2/3R4

#2

7 + 9

SOLUTION

  • SOUND
  • Tries
    • 1.Sc5?
      • threat
        • 2.Qe4#
      • 1...dxc5
        • 2.Qxe5#
      • 1...Kxd4!
    • 1.Qe4+?
      • 1...Kxe6
        • 2.d5#
      • 1...Kxe4!
    • 1.dxe5?
      • threat
        • 2.Rxd3#
      • 1...d2
        • 2.Rxd2#
      • 1...dxe6!
  • Keys
    • 1.Qxd3!
      • 1...Kxe6
        • 2.d5#
      • 1...Bxd4
        • 2.Qf5#
      • 1...dxe6
        • 2.Qxf3#
      • 1...Sb6
        • 2.Sc7#
      • 1...Bf6
        • 2.Sxf4#
      • 1...Bg7
        • 2.Sxf4#
      • 1...Bh8
        • 2.Sxf4#
      • 1...Sc7
        • 2.Sxc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Threat
        • QAB1(E)
      • Vars
        • P(f);N_GUARD,XS(F)::QAR1(E),XB(e)
      • Refutation
        • K(d);N_SPINB(e),P-FLIGHT,P_SPINP(a),XP(C)
    • Try
      • Q(E);CHECK,N_PINB(e)
      • Vars
        • K(d);OGATE,P_SPINB(e),S_FLIGHT,XS(F)::P(C)
      • Refutation
        • K(d);S_FLIGHT,XQ(E)
    • Try
      • P(C);P_PINP(a),XB(e)
      • Threat
        • R(A),XP(a)
      • Vars
        • P(a);OGATEB::R(A),XP(a)
      • Refutation
        • P(g);XS(F)
  • Actual
    • Q(E);N_PINB(e),XP(a)
    • Vars
      • K(d);OGATE,S_FLIGHT,XS(F)::P(C)
      • B(e);OGATEB,P_SPINB(e),XP(C)::QAR2(E)
      • P(g);SBLOCK,XS(F)::QAB(E),XP(b)
      • S(i);N_GUARD::S(F)
      • B(e);N_GUARD::S(F),XP(c)
      • S(i);N_GUARD::S(F),XS(i)
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