MESON Chess Problem Database

Problem Display
PID: 114897 (K2N2B1/8/pp6/bk6/1n1n3b/Q7/N7/2R3B1 w - - 0 1)

Authier, Gabriel

l'Anti-Dual, 1953

K2N2B1/8/pp6/bk6/1n1n3b/Q7/N7/2R3B1

#2

7 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxa2
      • 2.Bc4#
    • 1...Sd3
      • 2.Bc4#
    • 1...Sbc6
      • 2.Bc4#
    • 1...Sc2
      • 2.Sc3#
    • 1...Se2
      • 2.Bc4#
    • 1...Sb3
      • 2.Sc3#
      • 2.Bc4#
    • 1...Sf3
      • 2.Sc3#
      • 2.Bc4#
    • 1...Sf5
      • 2.Sc3#
      • 2.Bc4#
    • 1...Sdc6
      • 2.Sc3#
      • 2.Bc4#
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sxd4#
        • 2.Sa7#
      • 1...Sbxc6
        • 2.Bc4#
      • 1...Sdxc6
        • 2.Sc3#
        • 2.Bc4#
      • 1...Sbc2
        • 2.Sa7#
      • 1...Sdc2
        • 2.Sa7#
      • 1...Bf2
        • 2.Sa7#
      • 1...Bf6
        • 2.Sa7#
      • 1...Se2
        • 2.Sa7#
      • 1...Sb3
        • 2.Sa7#
      • 1...Sf3
        • 2.Sa7#
      • 1...Sf5
        • 2.Sa7#
      • 1...Se6
        • 2.Sa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • S(a);XS(C)::B(G)
    • S(a);::B(G)
    • S(b);::S(C)
    • S(b);::B(G)
  • Actual
    • S(F);
    • Threat
      • DUALS(2)
    • Vars
      • S(a);SBLOCK,XS(F)::B(G)
      • S(a);::S(F)
      • S(b);::S(F)
      • B(c);::S(F)
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