MESON Chess Problem Database

Problem Display
PID: 96502 (8/3p2Q1/3R1NNK/4pP2/6bR/4k3/2P3Pp/4B1br w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

The Chess Problem, 1947

8/3p2Q1/3R1NNK/4pP2/6bR/4k3/2P3Pp/4B1br

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Re4#
    • 1...Be2
      • 2.Sd5#
      • 2.Re4#
    • 1...Bh3
      • 2.Re4#
    • 1...Bh5
      • 2.Re4#
  • Tries
    • 1.Sxg4+?
      • 1...Ke4
        • 2.Qxe5#
      • 1...Ke2!
    • 1.Rxg4?
      • threat
        • 2.Re4#
      • 1...e4
        • 2.Rxe4#
      • 1...Ke2!
  • Keys
    • 1.Sf4!
      • 1...Kxf4
        • 2.Qg5#
      • 1...Bxf5
        • 2.Qg3#
      • 1...exf4
        • 2.Qe7#
      • 1...Bf2
        • 2.Bd2#
      • 1...Bd1
        • 2.Rd3#
      • 1...Be2
        • 2.S4d5#
      • 1...Bf3
        • 2.Rd3#
      • 1...Bh3
        • 2.Rd3#
        • 2.Qg3#
      • 1...Bh5
        • 2.Rd3#
      • 1...e4
        • 2.S6d5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • B(e);OGATE::R1(D)
  • Tries
    • Try
      • S(G);CHECK,XB(e)
      • Vars
        • K(d);P-FLIGHT::QAR1(J),XP(f)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • R(D);XB(e)
      • Threat
        • R1(D)
      • Vars
        • P(f);::R1(D),XP(f)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • S(H);
    • Vars
      • K(d);OGATEB,P_SPINB(e),S_FLIGHT,XS(H)::QAB1(J)
      • B(e);OGATE,XP(E)::QAR2(J)
      • P(f);OGATEB,SBLOCK,XS(H)::QAR(J)
      • B(a);SBLOCK::B(A)
      • B(e);::R1(F)
      • B(e);SBLOCK::S(H)
      • P(f);SBLOCK::S(G)
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