MESON Chess Problem Database

Problem Display
PID: 258289 (2r5/8/2n5/4Np2/2p1k3/2pR1p2/7Q/6BK w - - 0 1)

Anonymous

English Mechanic and World of Science, 1891

(First published on Fri Mar 20 1891)

2r5/8/2n5/4Np2/2p1k3/2pR1p2/7Q/6BK

#2

5 + 7

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Rd4#
    • 1...Sd4
      • 2.Rxd4#
    • 1...Sa5
      • 2.Rd4#
    • 1...Sxe5
      • 2.Rd4#
    • 1...Sa7
      • 2.Rd4#
    • 1...Se7
      • 2.Rd4#
    • 1...Sb8
      • 2.Rd4#
    • 1...Sd8
      • 2.Rd4#
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sc5#
      • 1...Kxd3
        • 2.Sc5#
      • 1...cxd3
        • 2.Sf6#
      • 1...Sd4
        • 2.Rxd4#
      • 1...f4
        • 2.Qh7#
      • 1...Sb4
        • 2.Rd4#
      • 1...Sa5
        • 2.Rd4#
      • 1...Se5
        • 2.Rd4#
      • 1...Sa7
        • 2.Rd4#
      • 1...Se7
        • 2.Rd4#
      • 1...Sb8
        • 2.Rd4#
      • 1...Sd8
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::R1(D)
    • S(f);N_GUARD::R1(D),XS(f)
    • S(f);N_GUARD,XS(E)::R1(D)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(d);S_FLIGHT,XR(D)::S(E)
      • P(c);SBLOCK,XR(D)::S(E)
      • S(f);N_GUARD::R1(D),XS(f)
      • P(e);OGATEB,SBLOCK::QAB(C)
      • S(f);N_GUARD::R1(D)
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