MESON Chess Problem Database

Problem Display
PID: 240667 (2Rn4/7B/2p2K2/3k1NQ1/PR1p1P2/bP3b2/2P1N3/4r3 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Thema Danicum, 1985

2Rn4/7B/2p2K2/3k1NQ1/PR1p1P2/bP3b2/2P1N3/4r3

#2

11 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sc3#
      • 2.Rxd4#
    • 1...Kc5
      • 2.Rb5#
  • Tries
    • 1.Sc3+?
      • 1...Kc5
        • 2.Rb5#
      • 1...dxc3!
    • 1.Rxd8+?
      • 1...Ke4
        • 2.Sc3#
        • 2.Seg3#
        • 2.Rbxd4#
        • 2.Rdxd4#
      • 1...Kc5!
  • Keys
    • 1.Ke7!
      • threat
        • 2.Se3#
        • 2.Sg3#
        • 2.Sxd4#
        • 2.Sh4#
        • 2.Sd6#
        • 2.Sh6#
        • 2.Sg7#
      • 1...Rxe2+
        • 2.Se3#
      • 1...Bxb4+
        • 2.Sd6#
      • 1...Ke4
        • 2.Sc3#
      • 1...Kc5
        • 2.Rb5#
      • 1...Rg1
        • 2.Se3#
        • 2.Sfg3#
      • 1...Be4
        • 2.Se3#
      • 1...Bg4
        • 2.Se3#
      • 1...Se6
        • 2.Se3#
      • 1...Sf7
        • 2.Se3#
      • 1...d3
        • 2.Se3#
        • 2.Sg3#
        • 2.Sd4#
        • 2.Sh4#
        • 2.Sd6#
        • 2.Sh6#
        • 2.Sg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(e);P-FLIGHT,P_SPINP(f)::R1(E)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINP(f)::R1(E)
      • Refutation
        • P(d);XS(B)
    • Try
      • R(K);CHECK,XS(g)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • K(I);P_SPINR(E),P_SPINS(B),S_FLIGHT
    • Threat
      • DUALS(7)
    • Vars
      • R(a);CHECK,XS(B)::QAR(H)+S(G),DCHECK
      • B(b);CHECK,XR(E)::QAR(H)+S(G)
      • K(e);N_PINS(B),P_SPINP(d),S_FLIGHT::S(B)
      • K(e);N_PINR(E),P-FLIGHT,P_SPINP(f)::R1(E)
      • B(c);N_PINS(B)::QAR(H)+S(G),DCHECK
      • B(c);::QAR(H)+S(G),DCHECK
      • S(g);N_PINS(B)::QAR(H)+S(G),DCHECK
      • S(g);::QAR(H)+S(G),DCHECK
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