MESON Chess Problem Database

Problem Display
PID: 147854 (2N1R1br/pn3P1n/3p2R1/1B1k2PQ/1P1pp3/2B4K/8/8 w - - 0 1)

Dawson, Thomas Rayner

Bolton Football and Field, 1911

(First published on Sat May 20 1911)

2N1R1br/pn3P1n/3p2R1/1B1k2PQ/1P1pp3/2B4K/8/8

#2

10 + 9

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Sa5
      • 2.Rxd6#
    • 1...Sc5
      • 2.Rxd6#
    • 1...Sd8
      • 2.Rxd6#
    • 1...Sxg5+
      • 2.Rxg5#
    • 1...dxc3
      • 2.Qd1#
    • 1...d3
      • 2.Se7#
    • 1...e3
      • 2.Qf3#
    • 1...a5
      • 2.Sb6#
    • 1...a6
      • 2.Sb6#
  • Tries
    • 1.Re5+?
      • 1...dxe5
        • 2.Se7#
      • 1...Kxe5!
    • 1.fxg8S?
      • 1...Sxg5+
        • 2.Rxg5#
      • 1...dxc3
        • 2.Qd1#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Sa5
        • 2.Rxd6#
      • 1...Sc5
        • 2.Rxd6#
      • 1...Sd8
        • 2.Rxd6#
      • 1...Sf8
        • 2.Sf6#
      • 1...d3
        • 2.Sce7#
        • 2.Sge7#
      • 1...e3
        • 2.Qf3#
      • 1...a5
        • 2.Sb6#
      • 1...a6
        • 2.Sb6#
      • 1...Rxg8!
  • Keys
    • 1.Rh6!
      • 1...Sxg5+
        • 2.Qxg5#
      • 1...Bxf7
        • 2.Qxf7#
      • 1...dxc3
        • 2.Qd1#
      • 1...Sf6
        • 2.gxf6#
      • 1...Sa5
        • 2.Rxd6#
      • 1...Sc5
        • 2.Rxd6#
      • 1...Sd8
        • 2.Rxd6#
      • 1...Sf8
        • 2.g6#
      • 1...d3
        • 2.Se7#
      • 1...e3
        • 2.Qf3#
      • 1...a5
        • 2.Sb6#
      • 1...a6
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::R1(G),XP(d)
    • S(g);CHECK,OGATE,P_PINQ(F),P_SPINS(g),XP(E)::R(G),XS(g)
    • P(a);OGATEB,XB(A)::QAR(F)
    • P(a);::S(I)
    • P(b);OGATEB::QAB(F)
    • P(e);N_GUARD::S(I)
  • Tries
    • Try
      • R(J);CHECK
      • Vars
        • P(d);SBLOCK,XR(J)::S(I)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(a),XR(J)
    • Try
      • P(H);XB(h)
      • Vars
        • S(g);CHECK,OGATE,P_PINQ(F),P_SPINS(g),XP(E)::R(G),XS(g)
        • P(a);OGATEB,XB(A)::QAR(F)
        • S(g);N_GUARD,P_PINQ(F)::S(H),XS(g)
        • S(f);N_GUARD::R1(G),XP(d)
        • S(g);N_GUARD,P_PINQ(F)::S(H)
        • P(b);OGATEB::QAB(F)
        • P(e);N_GUARD::S(I)
      • Refutation
        • R(i);XS(H)
  • Actual
    • R(G);
    • Vars
      • S(g);CHECK,OGATE,P_SPINS(g),XP(E)::QAR(F),XS(g)
      • B(h);OGATE,XP(H)::QAB(F),XB(h)
      • P(a);OGATEB,XB(A)::QAR(F)
      • S(g);OGATE::QAR(F)+P(E),XS(g)
      • S(f);N_GUARD::R1(G),XP(d)
      • S(g);N_GUARD::QAR(F)+P(E)
      • P(a);::S(I)
      • P(b);OGATEB::QAB(F)
      • P(e);N_GUARD::S(I)
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