MESON Chess Problem Database

Problem Display
PID: 137622 (2K5/1Nn5/p1kN4/P7/4R3/nB1R4/1b6/8 w - - 0 1)

Gandy, Jean-Claude

diagrammes, 1974

2K5/1Nn5/p1kN4/P7/4R3/nB1R4/1b6/8

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Rc4#
    • 1...Sc2
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
    • 1...Sab5
      • 2.Rc4#
    • 1...Scb5
      • 2.Bd5#
    • 1...Sd5
      • 2.Bxd5#
    • 1...Se6
      • 2.Bd5#
    • 1...Sa8
      • 2.Bd5#
    • 1...Se8
      • 2.Bd5#
  • Tries
    • 1.Ba4+?
      • 1...Sab5
        • 2.Rc4#
      • 1...Scb5!
    • 1.Rb4?
      • threat
        • 2.Rb6#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Sab5
        • 2.Rc4#
      • 1...Scb5
        • 2.Bd5#
      • 1...Sd5
        • 2.Bxd5#
      • 1...Sa8
        • 2.Bd5#
      • 1...Bd4!
    • 1.Re7?
      • threat
        • 2.Rxc7#
      • 1...Scb5
        • 2.Bd5#
      • 1...Sd5
        • 2.Bxd5#
      • 1...Se6
        • 2.Bd5#
      • 1...Sa8
        • 2.Bd5#
      • 1...Se8
        • 2.Bd5#
      • 1...Sab5!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sa7#
      • 1...Kxb5
        • 2.Ba4#
      • 1...Saxb5
        • 2.Rc4#
      • 1...Scxb5
        • 2.Bd5#
      • 1...axb5
        • 2.Rd6#
      • 1...Bd4
        • 2.Sxd4#

This is after

After M. Thibaud.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • S(b);N_GUARD::R(C)
    • S(b);N_GUARD::R(C),XS(b)
    • S(e);N_GUARD::B(A)
    • S(e);N_GUARD::B(A),XS(e)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • S(b);P_SPINS(b)::R(C)
      • Refutation
        • S(e);P_SPINS(e)
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • S(b);N_GUARD::R(C),XS(b)
        • S(b);N_GUARD::R(C)
        • S(e);N_GUARD::B(A)
        • S(e);N_GUARD::B(A),XS(e)
      • Refutation
        • B(a);
    • Try
      • R(C);
      • Threat
        • R1(C),XS(e)
      • Vars
        • S(e);N_GUARD::B(A)
        • S(e);N_GUARD::B(A),XS(e)
      • Refutation
        • S(b);
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(E)::B(A)
      • S(b);N_GUARD,SBLOCK,XS(E)::R(C)
      • S(e);N_GUARD,SBLOCK,XS(E)::B(A)
      • P(c);SBLOCK,XS(E)::R1(B)
      • B(a);N_GUARD::S(E),XB(a)
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