MESON Chess Problem Database

Problem Display
PID: 38391 (8/8/8/2Bpp3/pR1q2Bp/4k3/3N1N2/6QK w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1947

8/8/8/2Bpp3/pR1q2Bp/4k3/3N1N2/6QK

#2

7 + 6

3979 Systematic Terminology 1984
15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sh3#
    • 1...Qxc5
      • 2.Sf1#
      • 2.Qe1#
  • Tries
    • 1.Bxd4+?
      • 1...Kxd2
        • 2.Rb2#
        • 2.Qd1#
      • 1...Kf4
        • 2.Sh3#
      • 1...exd4!
    • 1.Rb3+?
      • 1...Kxd2
        • 2.Qd1#
      • 1...Kf4
        • 2.Sh3#
      • 1...axb3!
    • 1.Rxd4?
      • threat
        • 2.Sf1#
        • 2.Sd1#
        • 2.Sh3#
        • 2.Qe1#
      • 1...e4
        • 2.Sh3#
      • 1...h3
        • 2.Sf1#
        • 2.Sd1#
        • 2.Sxh3#
        • 2.Qe1#
        • 2.Qg3#
      • 1...exd4!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Sde4#
      • 1...Kxf2
        • 2.Qg1#
      • 1...Kf4
        • 2.Sf1#
      • 1...Qxc5
        • 2.Qe1#
      • 1...e4
        • 2.Sdxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(D)
  • Tries
    • Try
      • B(G);CHECK,XQ(c)
      • Vars
        • K(a);S_FLIGHT::S(D)
      • Refutation
        • P(f);XB(G)
    • Try
      • R(E);CHECK
      • Vars
        • K(a);N_SPINQ(c),S_FLIGHT,XS(C)::QAR1(A)
        • K(a);N_SPINQ(c),S_FLIGHT::S(D)
      • Refutation
        • P(b);XR(E)
    • Try
      • R(E);XQ(c)
      • Threat
        • DUALS(4)
      • Vars
        • P(f);::QAB(A)+S(D)
      • Refutation
        • P(f);P_SPINP(f),XR(E)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+S(C)
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
      • K(a);S_FLIGHT::QAB(A)+S(C)
      • Q(c);N_SPINQ(c),XB(G)::QAR2(A)
      • P(f);::QAB(A)+S(C),XP(f)
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