MESON Chess Problem Database

Problem Display
PID: 31742 (2K1N3/p7/2p5/rQ2R3/4qkPp/7P/3n1BnP/5R2 w - - 0 1)

Rowland, Frideswide F (Mrs TB, nee Beechey)

English Mechanic and World of Science, 1881

(First published on Fri Nov 4 1881)

2K1N3/p7/2p5/rQ2R3/4qkPp/7P/3n1BnP/5R2

#2

9 + 8

15 British Chess Magazine 1883
3467 Chess Blossoms 1883
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Be3#
      • 2.Bg3#
    • 1...Qc2
      • 2.Be3#
      • 2.Bg3#
    • 1...Qd3
      • 2.Be3#
      • 2.Bg3#
    • 1...Qd5
      • 2.Bg3#
    • 1...Qg6
      • 2.Be3#
      • 2.Bg3#
    • 1...Qh7
      • 2.Be3#
      • 2.Bg3#
    • 1...Qe1
      • 2.Be3#
      • 2.Bg3#
    • 1...Qe2
      • 2.Be3#
      • 2.Bg3#
    • 1...Qe3
      • 2.Bxe3#
      • 2.Bg3#
    • 1...Qa4
      • 2.Be3#
      • 2.Bg3#
    • 1...Qb4
      • 2.Be3#
      • 2.Bg3#
    • 1...Qc4
      • 2.Be3#
      • 2.Bg3#
    • 1...Qd4
      • 2.Be3#
      • 2.Bg3#
    • 1...Se3
      • 2.Bg3#
  • Keys
    • 1.Qd3!
      • threat
        • 2.Bg3#
      • 1...Qf5+
        • 2.Qxf5#
      • 1...Kxe5
        • 2.Qd6#
      • 1...Qxe5
        • 2.Be3#
      • 1...Rxe5
        • 2.Be3#
      • 1...Sxf1
        • 2.Qxe4#
      • 1...Qf3
        • 2.Qf5#
      • 1...Sf3
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • Q(c);::R(A)+B(B),DCHECK
    • S(b);SBLOCK::R(A)+B(B),DCHECK
  • Actual
    • Q(F);
    • Threat
      • R(A)+B(B),DCHECK
    • Vars
      • Q(c);CHECK,OGATE::QAR1(F),XQ(c)
      • K(d);OGATEB,S_FLIGHT,XR(G)::QAB1(F)
      • Q(c);SBLOCK,XR(G)::R(A)+B(B),DCHECK
      • R(f);SBLOCK,XR(G)::R(A)+B(B),DCHECK
      • S(a);N_GUARD,XR(A)::QAR1(F),XQ(c)
      • Q(c);OGATE,SBLOCK::QAR1(F)
      • S(a);N_GUARD::QAR1(F),XQ(c)
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