MESON Chess Problem Database

Problem Display
PID: 8160 (R1Q5/rp2b1Pb/1Rr3NK/1N1Pp1p1/P1kPP2p/B1p1p1qn/2P5/8 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

The Problemist, 1995

R1Q5/rp2b1Pb/1Rr3NK/1N1Pp1p1/P1kPP2p/B1p1p1qn/2P5/8

#2

13 + 13

SOLUTION

  • SOUND
  • Tries
    • 1.Rxc6+?
      • 1...Bc5
        • 2.Rxc5#
      • 1...bxc6!
    • 1.Qxc6+?
      • 1...Bc5
        • 2.Qxc5#
      • 1...bxc6!
    • 1.dxc6?
      • threat
        • 2.Qe6#
      • 1...Qg4
        • 2.Sxe5#
      • 1...Bg8
        • 2.Qxg8#
      • 1...Sf4
        • 2.Sxe5#
      • 1...Bxa3!
  • Keys
    • 1.d6!
      • threat
        • 2.Qe6#
      • 1...Rxc8
        • 2.Rxc8#
      • 1...Qg4
        • 2.Sxe5#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Bg8
        • 2.Qxg8#
      • 1...Sf4
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(H);CHECK,N_SPINS(I),XR(i)
      • Vars
        • B(l);N_GUARD,P_SPINB(l)::R1(H),XB(l)
      • Refutation
        • P(k);P_SPINP(k),XR(H)
    • Try
      • Q(M);CHECK,N_SPINS(I),XR(i)
      • Vars
        • B(l);N_GUARD,P_SPINB(l)::QAR1(M),XB(l)
      • Refutation
        • P(k);XQ(M)
    • Try
      • P(G);N_SPINS(I),XR(i)
      • Threat
        • QAB(M)
      • Vars
        • Q(c);N_GUARD::S(I),XP(g)
        • B(m);N_GUARD::QAB(M),XB(m)
        • S(d);S_CUTQ(c)::S(I),XP(g)
      • Refutation
        • B(l);XB(B)
  • Actual
    • P(G);N_SPINS(I)
    • Threat
      • QAB(M)
    • Vars
      • R(i);N_SPINR(i),OGATE,XQ(M)::R(L),XR(i)
      • Q(c);N_GUARD::S(I),XP(g)
      • R(i);OGATE::QAR1(M),XR(i)
      • B(m);N_GUARD::QAB(M),XB(m)
      • S(d);S_CUTQ(c)::S(I),XP(g)
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