MESON Chess Problem Database

Problem Display
PID: 258608 (5B2/8/1K4p1/1Rp1p3/2k1B2r/b4N2/n1P3Qr/2nN4 w - - 0 1)

Geary, William

English Mechanic and World of Science, 1900

(First published on Fri Oct 5 1900)

5B2/8/1K4p1/1Rp1p3/2k1B2r/b4N2/n1P3Qr/2nN4

#2

8 + 9

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.cxb3#
    • 1...Sd3
      • 2.cxd3#
    • 1...Sc3
      • 2.Se3#
    • 1...Sb4
      • 2.Rxc5#
  • Tries
    • 1.c3?
      • threat
        • 2.Sd2#
        • 2.Sxe5#
      • 1...Rxg2
        • 2.Sxe5#
      • 1...Sxc3
        • 2.Se3#
      • 1...Bb4
        • 2.Sd2#
      • 1...Sb4
        • 2.Sd2#
      • 1...Rh5
        • 2.Sd2#
      • 1...Sb3
        • 2.Sxe5#
      • 1...Sd3
        • 2.Sd2#
      • 1...Rxe4!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Be6#
      • 1...Kd5
        • 2.Se3#
      • 1...gxf5
        • 2.Qg8#
      • 1...Rd4
        • 2.Sxe5#
      • 1...Sc3
        • 2.Se3#
      • 1...Sb4
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(a);OGATE::P(B),XS(a)
    • S(b);SBLOCK::S(A)
    • S(b);SBLOCK,S_CUTB(d)::R1(F),XP(g)
  • Tries
    • Try
      • P(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XQ(C)::S(D),XP(h)
        • S(b);SBLOCK,XP(B)::S(A)
        • B(d);::S(D)
        • S(b);::S(D)
        • R(f);::S(D)
        • S(a);::S(D),XP(h)
        • S(a);::S(D)
      • Refutation
        • R(f);XB(E)
  • Actual
    • B(E);
    • Threat
      • B(E)
    • Vars
      • K(e);N_GUARD,P_SPINP(g),S_FLIGHT::S(A)
      • P(i);OGATE,XB(E)::QAB(C)
      • R(f);SBLOCK::S(D),XP(h)
      • S(b);SBLOCK::S(A)
      • S(b);SBLOCK,S_CUTB(d)::R1(F),XP(g)
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