MESON Chess Problem Database

Problem Display
PID: 152467 (B7/1Q2p3/2n1P3/1p4NR/1p1k1Bp1/1P4P1/2P5/3K4 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1940

B7/1Q2p3/2n1P3/1p4NR/1p1k1Bp1/1P4P1/2P5/3K4

#2

10 + 6

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Se4?
      • 1...Sa5
        • 2.Qd5#
        • 2.Qb6#
        • 2.Qa7#
        • 2.Qd7#
      • 1...Se5
        • 2.Qd5#
        • 2.Qb6#
        • 2.Qa7#
      • 1...Sa7
        • 2.Qd5#
        • 2.Qb6#
        • 2.Qxa7#
        • 2.Qd7#
      • 1...Sb8
        • 2.Qd5#
        • 2.Qb6#
        • 2.Qa7#
      • 1...Sd8
        • 2.Qd5#
        • 2.Qb6#
        • 2.Qa7#
        • 2.Qd7#
      • 1...Kxe4!
    • 1.Qxb5?
      • threat
        • 2.Qc4#
      • 1...Sa5
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Kc3!
    • 1.Qb6+?
      • 1...Kd5
        • 2.Bxc6#
      • 1...Kc3!
  • Keys
    • 1.Qc7!
      • 1...Kc3
        • 2.Be5#
      • 1...Kc5
        • 2.Sf3#
      • 1...Kd5
        • 2.Qe5#
      • 1...Sa5
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sa7
        • 2.Qe5#
      • 1...Sb8
        • 2.Qe5#
      • 1...Sd8
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Refutation
        • K(b);P-FLIGHT,P_SPINS(e),XS(F)
    • Try
      • Q(I);XP(d)
      • Threat
        • QAR1(I)
      • Vars
        • S(e);N_GUARD::QAB1(I)
        • S(e);N_GUARD::QAB1(I),XS(e)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINS(e)::B(J),XS(e)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(I);
    • Vars
      • K(b);P_SPINS(e),S_FLIGHT::B(E)
      • K(b);P_SPINS(e),S_FLIGHT::R(G)+S(F)
      • K(b);P-FLIGHT,P_SPINS(e)::QAR1(I)
      • S(e);N_GUARD::QAB1(I)
      • S(e);N_GUARD::QAB1(I),XS(e)
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Developed and maintained by Brian Stephenson.
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