MESON Chess Problem Database

Problem Display
PID: 263943 (K1N3B1/4N3/2R2pq1/P3k3/3pbpp1/p7/8/4Q3 w - - 0 1)

Thomson, Robert Gavin

Sunday Referee, 1935

(First published on Sun Mar 31 1935)

K1N3B1/4N3/2R2pq1/P3k3/3pbpp1/p7/8/4Q3

#2

7 + 8

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Qc3#
      • 2.Qa1#
    • 1...f3
      • 2.Qg3#
    • 1...f5
      • 2.Sxg6#
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qb8#
      • 1...Bxc6+
        • 2.Sxc6#
      • 1...Bxb1
        • 2.Re6#
      • 1...Bc2
        • 2.Re6#
      • 1...Bd3
        • 2.Re6#
      • 1...d3
        • 2.Qa1#
      • 1...Bh1
        • 2.Sxg6#
      • 1...Bg2
        • 2.Sxg6#
      • 1...Bf3
        • 2.Sxg6#
      • 1...Bd5
        • 2.Sxg6#
      • 1...Bf5
        • 2.Rc5#
      • 1...f5
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • P(d);OGATEB::QAB(A)
    • P(g);SBLOCK::S(D),XQ(h)
  • Actual
    • Q(A);N_PINB(c)
    • Threat
      • QAB(A)
    • Vars
      • B(c);CHECK,XR(C)::S(D),XB(c)
      • B(c);N_PINR(C),XQ(A)::R1(C)
      • B(c);N_PINR(C)::R1(C)
      • P(b);OGATEB::QAB(A)
      • B(c);N_GUARD::S(D),XQ(h)
      • B(c);N_PINR(C)::R(C)
      • P(g);SBLOCK,S_CUTB(c)::S(D),XQ(h)
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