MESON Chess Problem Database

Problem Display
PID: 240641 (8/3R3N/2K1pN2/1R1pkp2/1pPp4/2n1bBP1/2n1QPP1/B7 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Thema Danicum, 1981

8/3R3N/2K1pN2/1R1pkp2/1pPp4/2n1bBP1/2n1QPP1/B7

#2

12 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rbxd5+?
      • 1...exd5
        • 2.Re7#
      • 1...Sxd5!
    • 1.Rdxd5+?
      • 1...Sxd5
        • 2.Sd7#
      • 1...exd5!
    • 1.Re7?
      • threat
        • 2.Sd7#
      • 1...d3
        • 2.Rxd5#
      • 1...f4!
    • 1.Rg7?
      • threat
        • 2.Sd7#
      • 1...f4
        • 2.Rg5#
      • 1...d3!
  • Keys
    • 1.Bxd5!
      • threat
        • 2.f4#
      • 1...Sxe2
        • 2.Bf3#
        • 2.Be4#
      • 1...exd5
        • 2.Re7#
      • 1...d3
        • 2.Bf3#
      • 1...f4
        • 2.Qh5#
      • 1...Se4
        • 2.Bxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(H);CHECK,XP(f)
      • Vars
        • P(i);S_CUTS(b),XR(H)::R(K)
      • Refutation
        • S(b);P_SPINP(e),XR(H)
    • Try
      • R(K);CHECK,XP(f)
      • Vars
        • S(b);P_SPINP(e),P_SPINS(b),XR(K)::S(J)
      • Refutation
        • P(i);P_SPINP(i),XR(K)
    • Try
      • R(K);
      • Threat
        • S(J)
      • Vars
        • P(e);P_SPINS(b)::R1(H),XP(f)
      • Refutation
        • P(h);
    • Try
      • R(K);
      • Threat
        • S(J)
      • Vars
        • P(h);OGATEB::R(K)
      • Refutation
        • P(e);P_SPINS(b)
  • Actual
    • B(E);XP(f)
    • Threat
      • P(C)
    • Vars
      • P(i);OGATEB,P_SPINP(i),XB(E)::R(K)
      • P(e);P_SPINS(b)::R(H)+B(E)
      • P(h);OGATEB::QAR(B)
      • S(b);N_GUARD,N_SPINB(c),P_SPINP(e)::R(H)+B(E),XS(b)
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