MESON Chess Problem Database

Problem Display
PID: 147350 (3n1Q2/Bn3P2/3N1p2/pB1k2P1/1b3P2/2pP4/N1K1R3/8 w - - 0 1)

Dawson, Thomas Rayner

Yorkshire Weekly Post, 1909

(First published on Sat Apr 10 1909)

3n1Q2/Bn3P2/3N1p2/pB1k2P1/1b3P2/2pP4/N1K1R3/8

#2

11 + 7

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Sxc3#
    • 1...Bxd6
      • 2.Sxc3#
    • 1...Sc6
      • 2.Bc4#
    • 1...a4
      • 2.Sxb4#
    • 1...fxg5
      • 2.Re5#
    • 1...f5
      • 2.Re5#
  • Tries
    • 1.Se8?
      • threat
        • 2.Sxf6#
        • 2.Sc7#
      • 1...Bxf8
        • 2.Sxc3#
      • 1...fxg5
        • 2.Sf6#
        • 2.Sc7#
        • 2.Re5#
      • 1...Sc5
        • 2.Qd6#
      • 1...Se6
        • 2.Sxf6#
      • 1...Bd6
        • 2.Sxc3#
        • 2.Sxf6#
      • 1...Be7
        • 2.Sxc3#
      • 1...f5
        • 2.Sf6#
        • 2.Sc7#
        • 2.Re5#
      • 1...Bc5!
  • Keys
    • 1.Sf5!
      • 1...Bxf8
        • 2.Sxc3#
      • 1...Sxf7
        • 2.Qxf7#
      • 1...fxg5
        • 2.Re5#
      • 1...Ba3
        • 2.Sxc3#
      • 1...Bc5
        • 2.Sxc3#
      • 1...Bd6
        • 2.Sxc3#
      • 1...Be7
        • 2.Sxc3#
      • 1...Sc5
        • 2.Qd6#
      • 1...Sd6
        • 2.Se7#
      • 1...Sc6
        • 2.Bc4#
      • 1...Se6
        • 2.Se3#
      • 1...a4
        • 2.Sxb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • B(b);N_GUARD::S(A),XP(a)
    • B(b);N_GUARD,XS(H)::S(A),XP(a)
    • S(g);SBLOCK::B(F)
    • P(c);N_GUARD::S(A),XB(b)
    • P(e);N_GUARD,XP(G)::R1(C)
    • P(e);N_GUARD::R1(C)
  • Tries
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);N_GUARD,XQ(K)::S(A),XP(a)
        • S(f);N_GUARD,S_CUTB(b)::QAR1(K)
        • S(g);::S(H),XP(e)
        • B(b);N_GUARD::S(A),XP(a)
      • Refutation
        • B(b);
  • Actual
    • S(H);
    • Vars
      • B(b);N_GUARD,XQ(K)::S(A),XP(a)
      • S(g);OGATE,XP(J)::QAB(K),XS(g)
      • P(e);N_GUARD,XP(G)::R1(C)
      • B(b);N_GUARD::S(A),XP(a)
      • S(f);N_GUARD,S_CUTB(b)::QAR1(K)
      • S(f);SBLOCK,S_CUTB(b)::S(H)
      • S(g);SBLOCK::B(F)
      • S(g);SBLOCK::S(H)
      • P(c);N_GUARD::S(A),XB(b)
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