MESON Chess Problem Database

Problem Display
PID: 70159 (8/2p2pb1/2P2kp1/4n1p1/3N2P1/B3RP2/1Q6/6K1 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Chess, 1950

8/2p2pb1/2P2kp1/4n1p1/3N2P1/B3RP2/1Q6/6K1

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Be7#
    • 1...Sxf3+
      • 2.Sxf3#
    • 1...Sc4
      • 2.Be7#
    • 1...Sxg4
      • 2.Be7#
    • 1...Sxc6
      • 2.Sxc6#
    • 1...Sd7
      • 2.Be7#
  • Tries
    • 1.Qh2?
      • threat
        • 2.Qxe5#
      • 1...Sxf3+
        • 2.Rxf3#
      • 1...Sxg4
        • 2.Be7#
      • 1...Sd3
        • 2.Be7#
      • 1...Sc4
        • 2.Be7#
      • 1...Sd7
        • 2.Be7#
      • 1...Sxc6!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qxe5#
      • 1...Sxf3+
        • 2.Rxf3#
      • 1...Sxg4
        • 2.Be7#
      • 1...Sxc6
        • 2.Qxc6#
      • 1...Sd3
        • 2.Be7#
      • 1...Sc4
        • 2.Be7#
      • 1...Sd7
        • 2.Be7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);::B(C)
    • S(a);CHECK,XP(E)::QAB(B)+S(F),XS(a)
    • S(a);XP(G)::B(C)
    • S(a);XP(H)::QAB(B)+S(F),XS(a)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XS(a)
      • Vars
        • S(a);CHECK,OGATE,XP(E)::R(D),XS(a)
        • S(a);XP(G)::B(C)
        • S(a);::B(C)
      • Refutation
        • S(a);XP(H)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B),XS(a)
    • Vars
      • S(a);CHECK,OGATE,XP(E)::R(D),XS(a)
      • S(a);XP(G)::B(C)
      • S(a);OGATE,XP(H)::QAR(B),XS(a)
      • S(a);::B(C)
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