MESON Chess Problem Database

Problem Display
PID: 232275 (Q1KB4/2P1RN2/3p1k1P/2p5/4B3/1b6/1p6/1R1n4 w - - 0 1)

Taverner, Thomas

Pen & Pencil, 1889

(First published on Sat Sep 28 1889)

Q1KB4/2P1RN2/3p1k1P/2p5/4B3/1b6/1p6/1R1n4

#2

9 + 6

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Be6+
      • 2.Rd7#
    • 1...Bxf7
      • 2.Re8#
    • 1...Sc3
      • 2.Rf1#
    • 1...d5
      • 2.Qc6#
      • 2.Qa6#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Sh7#
        • 2.Re6#
        • 2.Re8#
      • 1...Be6+
        • 2.Rxe6#
      • 1...Bg8
        • 2.Re6#
        • 2.Re8#
      • 1...Kxg5!
    • 1.Qd5?
      • threat
        • 2.Re5#
        • 2.Rd7#
        • 2.Re8#
        • 2.Qf5#
        • 2.Qg5#
      • 1...Se3
        • 2.Re5#
        • 2.Rd7#
        • 2.Re8#
        • 2.Qg5#
      • 1...Bxd5!
  • Keys
    • 1.Qa3!
      • 1...Be6+
        • 2.Rd7#
      • 1...Bxf7
        • 2.Re8#
      • 1...Bd5
        • 2.Qf3#
      • 1...Ba2
        • 2.Qf3#
      • 1...Bc2
        • 2.Qf3#
      • 1...Ba4
        • 2.Qf3#
      • 1...Bc4
        • 2.Qf3#
      • 1...Sf2
        • 2.Qxb2#
      • 1...Sc3
        • 2.Rf1#
      • 1...Se3
        • 2.Qxb2#
      • 1...c4
        • 2.Qxd6#
      • 1...d5
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • B(c);CHECK,SBLOCK::B(I)+R(E)
    • B(c);SBLOCK,XS(F)::B(I)+R(E)
    • S(a);OGATE::R(A)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Vars
        • B(c);CHECK::B(I)+R(E),DCHECK,XB(c)
      • Refutation
        • K(f);S_FLIGHT,XS(F)
    • Try
      • Q(G);
      • Threat
        • DUALS(5)
      • Refutation
        • B(c);XQ(G)
  • Actual
    • Q(G);
    • Vars
      • B(c);CHECK,SBLOCK::B(I)+R(E)
      • B(c);SBLOCK,XS(F)::B(I)+R(E)
      • B(c);OGATE::QAR(G)
      • S(a);N_GUARD::QAB(G),XP(b)
      • S(a);OGATE::R(A)
      • P(d);OGATE::QAR2(G),XP(e)
      • P(e);OGATEB::QAR(G)
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