MESON Chess Problem Database

Problem Display
PID: 151218 (3rb3/1N1pK3/3QpR2/8/4kNB1/bq4P1/1BP2P2/8 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1933

3rb3/1N1pK3/3QpR2/8/4kNB1/bq4P1/1BP2P2/8

#2

10 + 7

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.cxd3#
    • 1...Bxb2
      • 2.Sc5#
    • 1...Bc5
      • 2.Sxc5#
    • 1...Bxd6+
      • 2.Sxd6#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Bf3#
        • 2.Rf4#
      • 1...Qxd3
        • 2.Rf4#
        • 2.cxd3#
      • 1...Bh5
        • 2.Rf4#
      • 1...e5
        • 2.Bf3#
      • 1...Bxd6+!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Sd6#
      • 1...Bxc5+
        • 2.Sxc5#
      • 1...Qxb7
        • 2.f3#
      • 1...Qd5
        • 2.f3#
      • 1...Qd3
        • 2.cxd3#
      • 1...Qb6
        • 2.f3#
      • 1...d5
        • 2.Rxe6#
      • 1...d6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • Q(b);OGATE::P(B),XQ(b)
    • B(a);N_GUARD,N_PINQ(G),XB(A)::S(I)
    • B(a);N_GUARD::S(I),XB(a)
    • B(a);CHECK,XQ(G)::S(I),XB(a)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);::R1(H)
        • P(d);::B(F)
      • Refutation
        • B(a);CHECK,XQ(G)
  • Actual
    • Q(G);
    • Threat
      • S(I)
    • Vars
      • B(a);CHECK,XQ(G)::S(I),XB(a)
      • Q(b);N_GUARD,XS(I)::P(C)
      • Q(b);N_GUARD::P(C)
      • Q(b);OGATE::P(B),XQ(b)
      • P(e);N_GUARD,S_CUTQ(b)::R(H),XP(d)
      • P(e);N_PINQ(G)::QAR1(G)
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