MESON Chess Problem Database

Problem Display
PID: 185010 (B2R4/2bqRQ1n/2n3P1/2P1r3/2bNkN2/2Pp4/5K1B/8 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Sachsische Zeitung, 2000

(First published on Sat Jan 8 2000)

B2R4/2bqRQ1n/2n3P1/2P1r3/2bNkN2/2Pp4/5K1B/8

#2

11 + 8

15391 Problemschach-Jahrbuch (2000) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.Qxf5#
    • 1...Qe8
      • 2.Qf5#
    • 1...Qxd4+
      • 2.Rxd4#
    • 1...Qd5
      • 2.Qf5#
    • 1...Qd6
      • 2.Qf5#
    • 1...Qxd8
      • 2.Qf5#
    • 1...Re6
      • 2.Qf5#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Qf3#
      • 1...Qf5+
        • 2.Qxf5#
      • 1...Sxd4
        • 2.Qf4#
      • 1...Qh3
        • 2.Qf4#
      • 1...Sg5
        • 2.Sf6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Qg4!
    • 1.Bxc6+?
      • 1...Qxc6
        • 2.Qf5#
      • 1...Qd5
        • 2.Qf5#
      • 1...Bd5!
  • Keys
    • 1.Sfe6!
      • threat
        • 2.Qf3#
      • 1...Qxd4+
        • 2.Rxd4#
      • 1...Rf5+
        • 2.Qxf5#
      • 1...Kd5
        • 2.Bxc6#
      • 1...Sg5
        • 2.Sxg5#
      • 1...Sf6
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • Q(g);N_GUARD,P_PINS(E)::QAB1(I),XQ(g)
    • Q(g);N_GUARD::QAB1(I)
    • Q(g);CHECK,OGATE,XS(D)::R1(K),XQ(g)
    • Q(g);N_GUARD,N_SPINS(e)::QAB1(I)
    • Q(g);N_GUARD,XR(K)::QAB1(I)
    • R(d);S_CUTQ(g)::QAB1(I)
  • Tries
    • Try
      • S(E);N_PINS(e)
      • Threat
        • QAB1(I)
      • Vars
        • Q(g);CHECK,N_GUARD::QAB1(I),XQ(g)
        • S(e);XS(D)::QAR1(I)
        • Q(g);::QAR1(I)
        • S(h);N_GUARD::S(E)
        • S(h);N_GUARD::S(E),XS(h)
      • Refutation
        • Q(g);
    • Try
      • B(J);CHECK,XS(e)
      • Vars
        • Q(g);XB(J)::QAB1(I)
        • Q(g);P_SPINQ(g)::QAB1(I)
      • Refutation
        • B(b);P_SPINB(b)
  • Actual
    • S(E);N_PINR(d)
    • Threat
      • QAB1(I)
    • Vars
      • Q(g);CHECK,OGATE,XS(D)::R1(K),XQ(g)
      • R(d);CHECK,N_GUARD::QAB1(I),XR(d)
      • K(c);P_SPINQ(g),S_FLIGHT::B(J),XS(e)
      • S(h);N_GUARD::S(E),XS(h)
      • S(h);N_GUARD::S(E)
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