MESON Chess Problem Database

Problem Display
PID: 136603 (2r5/1p1B4/3p2p1/3k2K1/1n4p1/n3Q3/1N6/3r4 w - - 0 1)

Langstaff, William A

The Field, 1920

(First published on Sat Feb 7 1920)

2r5/1p1B4/3p2p1/3k2K1/1n4p1/n3Q3/1N6/3r4

#2

4 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Be6#
    • 1...Sc6
      • 2.Be6#
  • Tries
    • 1.Qe4+?
      • 1...Kc5
        • 2.Sa4#
      • 1...Kxe4!
  • Keys
    • 1.Sa4!
      • threat
        • 2.Sb6#
      • 1...Kc4
        • 2.Sb6#
      • 1...Rd4
        • 2.Qe6#
      • 1...Rc6
        • 2.Be6#
      • 1...Sc4
        • 2.Sc3#
      • 1...b6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(i);SBLOCK::B(D)
    • S(c);SBLOCK::B(D)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);P-FLIGHT::S(A)
      • Refutation
        • K(e);S_FLIGHT,XQ(B)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • K(e);S_FLIGHT::S(A)
      • R(a);SBLOCK::QAB1(B)
      • R(i);SBLOCK::B(D)
      • S(b);SBLOCK,S_CUTR(i)::S(A)
      • P(h);::S(A),XP(h)
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