MESON Chess Problem Database

Problem Display
PID: 271472 (1N5K/b2n4/5p2/5R1p/b2kN1n1/pP1p1B2/7r/2Q5 w - - 0 1)

Tibbs, EJ

Tibbs, WJ

Sunday Referee, 1933

(First published on Sun Apr 23 1933)

1N5K/b2n4/5p2/5R1p/b2kN1n1/pP1p1B2/7r/2Q5

#2

7 + 10

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb3
      • 2.Sc6#
    • 1...Bc6
      • 2.Sxc6#
    • 1...Se3
      • 2.Qc3#
    • 1...Sb6
      • 2.Qc5#
    • 1...d2
      • 2.Qc3#
  • Keys
    • 1.Sf2!
      • threat
        • 2.Rd5#
      • 1...Bxb3
        • 2.Sc6#
      • 1...d2
        • 2.Qxd2#
      • 1...Bc6
        • 2.Sxc6#
      • 1...Se3
        • 2.Qa1#
      • 1...Sge5
        • 2.Rf4#
      • 1...Sde5
        • 2.Rf4#
      • 1...Sb6
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(d);N_GUARD,XP(B)::S(F)
    • B(d);N_GUARD::S(F),XB(d)
    • S(f);SBLOCK::QAB1(A)
    • S(j);N_GUARD,S_CUTB(i)::QAB1(A)
    • P(c);::QAB1(A)
  • Actual
    • S(D);
    • Threat
      • R1(E)
    • Vars
      • B(d);N_GUARD,XP(B)::S(F)
      • P(c);OGATEB::QAR2(A),XP(c)
      • B(d);N_GUARD::S(F),XB(d)
      • S(f);SBLOCK::QAB(A)
      • S(f);SBLOCK::R(E)
      • S(j);SBLOCK::R(E)
      • S(j);N_GUARD,S_CUTB(i)::QAB1(A)
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