MESON Chess Problem Database

Problem Display
PID: 186016 (8/8/8/1Qp1p3/2r5/2p1kBB1/1nK1N1P1/8 w - - 0 1)

Hanson, JH

The Observer, 1932

(First published on Sun May 1 1932)

8/8/8/1Qp1p3/2r5/2p1kBB1/1nK1N1P1/8

#2

6 + 6

15239 Valois Notebooks 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qxc4?
      • threat
        • 2.Qe4#
        • 2.Qxc5#
      • 1...Sd3
        • 2.Qxd3#
        • 2.Qe4#
      • 1...Sa4
        • 2.Qd3#
        • 2.Qe4#
      • 1...e4
        • 2.Qxe4#
        • 2.Qxc5#
      • 1...Sxc4!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sf5#
      • 1...Kxd4
        • 2.Bf2#
      • 1...Rxd4
        • 2.Qe2#
      • 1...cxd4
        • 2.Qxe5#
      • 1...exd4
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);XR(d)
      • Threat
        • DUALS(2)
      • Refutation
        • S(a);XQ(F)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(c);S_FLIGHT,XS(B)::B(E)
      • R(d);OGATE,SBLOCK,XS(B)::QAR1(F)
      • P(e);OGATE,XS(B)::QAR2(F),XP(f)
      • P(f);OGATEB,SBLOCK,XS(B)::QAR(F)
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