MESON Chess Problem Database

Problem Display
PID: 76631 (K7/8/1pk5/1N1R1P2/2nP4/5B2/N1n5/8 w - - 0 1)

Cafferata, Louis William

The Tablet, 1940

(First published on Sat Nov 30 1940)

K7/8/1pk5/1N1R1P2/2nP4/5B2/N1n5/8

#2

7 + 4

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Sb4#
    • 1...Se1
      • 2.Sb4#
    • 1...S2a3
      • 2.Sb4#
    • 1...S2e3
      • 2.Sb4#
    • 1...Sb4
      • 2.Sxb4#
    • 1...Sxd4
      • 2.Sb4#
  • Tries
    • 1.Sac3?
      • threat
        • 2.Rd6#
        • 2.Rd8#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Se1
        • 2.Rd6#
      • 1...S2e3
        • 2.Rd6#
      • 1...Sb4
        • 2.Rd6#
      • 1...Sd2
        • 2.Rd6#
      • 1...S4e3
        • 2.Rd6#
      • 1...Se5
        • 2.Rd6#
      • 1...Sxd4!
  • Keys
    • 1.Be2!
      • 1...Kxd5
        • 2.Bf3#
      • 1...Sxd4
        • 2.Sb4#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Sb2
        • 2.Rd6#
      • 1...Sa1
        • 2.Sb4#
      • 1...Se1
        • 2.Sb4#
      • 1...S2a3
        • 2.Sb4#
      • 1...S2e3
        • 2.Sb4#
      • 1...Sb4
        • 2.Sxb4#
      • 1...Sd2
        • 2.Rd6#
      • 1...S4a3
        • 2.Rd6#
      • 1...S4e3
        • 2.Rd6#
      • 1...Sa5
        • 2.Rd6#
      • 1...Se5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • S(a);N_GUARD,XP(C)::S(A)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::B(B)+R(E),DCHECK,XS(b)
        • S(a);::B(B)+R(E),DCHECK
        • S(b);::B(B)+R(E),DCHECK
      • Refutation
        • S(a);XP(C)
  • Actual
    • B(B);
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(E)::B(B)
      • S(a);N_GUARD,XP(C)::S(A)
      • S(b);N_GUARD::R1(E),XS(b)
      • S(b);N_GUARD::R1(E)
      • S(a);N_GUARD::S(A)
      • S(a);N_GUARD::S(A),XS(a)
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