MESON Chess Problem Database

Problem Display
PID: 103525 (3q1r2/3r1n2/Q6b/4NRn1/4k3/4Nb2/1B2B2K/4R3 w - - 0 1)

Daniel, Arthur William

Checkmate, 1904

3q1r2/3r1n2/Q6b/4NRn1/4k3/4Nb2/1B2B2K/4R3

#2

8 + 8

15 British Chess Magazine 1904
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sh3
      • 2.Bxf3#
    • 1...Se6
      • 2.Bxf3#
    • 1...Sh7
      • 2.Bxf3#
    • 1...Sd6
      • 2.Bd3#
      • 2.Qd3#
  • Tries
    • 1.Qc4+?
      • 1...Rd4
        • 2.Bd3#
      • 1...Kxe3!
    • 1.Qa4+?
      • 1...Rd4
        • 2.Bd3#
      • 1...Kxe3!
    • 1.Qc6+?
      • 1...Rd5
        • 2.Bd3#
      • 1...Kxe3!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qd3#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Kxf5
        • 2.Qg6#
      • 1...Rxd5
        • 2.Bd3#
      • 1...Sxe5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • S(c);N_GUARD::B(C),XB(a)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • R(e);P_SPINR(e)::B(C)
      • Refutation
        • K(b);P-FLIGHT,XS(E)
    • Try
      • Q(H);CHECK
      • Vars
        • R(e);P_SPINR(e)::B(C)
      • Refutation
        • K(b);P-FLIGHT,XS(E)
    • Try
      • Q(H);CHECK
      • Vars
        • R(e);P_SPINR(e)::B(C)
      • Refutation
        • K(b);P-FLIGHT,XS(E)
  • Actual
    • S(E);
    • Threat
      • QAB1(H)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(E)::QAB1(H)
      • K(b);OGATEB,S_FLIGHT,XR(G)::QAB1(H)
      • R(e);SBLOCK,XS(E)::R(A)+B(C),DCHECK
      • S(f);OGATE,XS(F)::R1(G),XS(f)
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