MESON Chess Problem Database

Problem Display
PID: 117270 (4R3/p1Qp3q/4bP2/2Nk1r2/N3R3/2p2r2/K1P2PB1/8 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Thema Danicum, 1996

4R3/p1Qp3q/4bP2/2Nk1r2/N3R3/2p2r2/K1P2PB1/8

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf2
      • 2.Sxc3#
    • 1...R3f4
      • 2.Sxc3#
      • 2.Rxf4#
    • 1...Bf7
      • 2.Qxd7#
    • 1...a5
      • 2.Sb6#
    • 1...a6
      • 2.Sb6#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Rd4#
      • 1...Kxe4
        • 2.Sxc3#
      • 1...R5f4
        • 2.Re5#
      • 1...d6
        • 2.Qc4#
      • 1...Qh4!
    • 1.Bxf3?
      • threat
        • 2.Sxc3#
        • 2.Rf4#
      • 1...Rxf6
        • 2.Sxc3#
      • 1...Qh1
        • 2.Sxc3#
      • 1...Qh3
        • 2.Sxc3#
      • 1...Qh5
        • 2.Sxc3#
      • 1...Rf4
        • 2.Sxc3#
      • 1...Re5
        • 2.Sxc3#
      • 1...Rg5
        • 2.Sxc3#
      • 1...Rh5
        • 2.Sxc3#
      • 1...d6
        • 2.Sxc3#
      • 1...Rxf3!
    • 1.R8xe6?
      • threat
        • 2.Rd6#
        • 2.Qd6#
        • 2.Qb7#
      • 1...Rxf6
        • 2.R6e5#
        • 2.Qe5#
        • 2.Qd6#
        • 2.Qb7#
      • 1...Qh2
        • 2.Qb7#
      • 1...Qe7
        • 2.Qb7#
      • 1...d6
        • 2.Rxd6#
        • 2.Qxd6#
      • 1...dxe6!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sxc3#
      • 1...Kxe4+
        • 2.Qc4#
      • 1...Rxd3
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD,P_PINP(B),XP(C)::S(E),XP(a)
    • B(e);N_GUARD,S_CUTQ(h)::QAR2(I),XP(g)
    • P(f);N_GUARD::S(E)
  • Tries
    • Try
      • S(G);
      • Threat
        • R1(F)
      • Vars
        • K(c);P_PINS(G),P_SPINB(e),P_SPINR(b),S_FLIGHT,XR(F)::S(E),XP(a)
        • R(d);N_GUARD::R1(F)
        • P(g);SBLOCK::QAB1(I)
      • Refutation
        • Q(h);
    • Try
      • B(D);XR(b)
      • Threat
        • DUALS(2)
      • Vars
        • R(d);XP(H)::S(E),XP(a)
        • Q(h);::S(E),XP(a)
        • R(d);::S(E),XP(a)
        • P(g);::S(E),XP(a)
      • Refutation
        • R(d);XB(D)
    • Try
      • R(J);XB(e)
      • Threat
        • DUALS(3)
      • Vars
        • Q(h);::QAB(I)
      • Refutation
        • P(g);XR(J)
  • Actual
    • S(G);
    • Threat
      • S(E),XP(a)
    • Vars
      • K(c);CHECK,P_SPINB(e),P_SPINR(b),S_FLIGHT,XR(F)::QAR2(I)
      • R(b);XS(G)::QAR1(I)
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