MESON Chess Problem Database

Problem Display
PID: 142074 (4QR2/3P2np/n2B1q1r/r1RN1k1p/4N1p1/p2pP1b1/B2P4/5K2 w - - 0 1)

Lies, Heinz

Brisbane Sports and Radio, 1933

(First published on Sat Jul 29 1933)

4QR2/3P2np/n2B1q1r/r1RN1k1p/4N1p1/p2pP1b1/B2P4/5K2

#2

11 + 12

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Sf4+?
      • 1...Sxc5
        • 2.Qe5#
      • 1...Rxc5!
    • 1.Qe5+?
      • 1...Kg6+
        • 2.Rxf6#
        • 2.Qxf6#
      • 1...Bxe5!
    • 1.Qe6+?
      • 1...Kxe6+
        • 2.Sdxf6#
      • 1...Kg6+
        • 2.Rxf6#
        • 2.Qxf6#
      • 1...Sxe6!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Se7#
      • 1...Kxe4+
        • 2.Sf4#
        • 2.Sxf6#
      • 1...Ke6+
        • 2.Sdxf6#
      • 1...Kg6+
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • S(h);XR(F)::QAR1(J)
      • Refutation
        • R(e);XR(F)
    • Try
      • Q(J);CHECK
      • Refutation
        • B(c);XQ(J)
    • Try
      • Q(J);CHECK
      • Vars
        • K(f);CHECK,N_SPINQ(i),S_FLIGHT,XQ(J)::B(B)+S(G),XQ(i)
      • Refutation
        • S(k);XQ(J)
  • Actual
    • Q(J);
    • Threat
      • R(F)+S(G),DCHECK
    • Vars
      • K(f);CHECK,N_SPINQ(i),S_FLIGHT::B(B)+S(G),XQ(i)
      • K(f);CHECK,N_SPINQ(i),S_FLIGHT::R1(K),XQ(i)
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