MESON Chess Problem Database

Problem Display
PID: 79234 (8/4B3/2B5/p2NRN2/2kp4/K2n3Q/5b2/8 w - - 0 1)

Boyer, Jean-Pierre

Monreal, Pierre

Sinfonie Scacchistiche, 1967

8/4B3/2B5/p2NRN2/2kp4/K2n3Q/5b2/8

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Sb6#
    • 1...Se1
      • 2.Sb6#
      • 2.Qb3#
    • 1...Sb2
      • 2.Sb6#
      • 2.Qb3#
    • 1...Sb4
      • 2.Sb6#
      • 2.Qb3#
    • 1...Sf4
      • 2.Sb6#
      • 2.Qb3#
    • 1...Sc5
      • 2.Sb6#
      • 2.Sd6#
    • 1...Sxe5
      • 2.Sb6#
      • 2.Qb3#
  • Tries
    • 1.Sfe3+?
      • 1...dxe3
        • 2.Re4#
      • 1...Bxe3!
    • 1.Bb4?
      • threat
        • 2.Sb6#
        • 2.Sd6#
      • 1...Sxb4
        • 2.Sb6#
      • 1...axb4+!
    • 1.Re2?
      • threat
        • 2.Rc2#
      • 1...Se1
        • 2.Sb6#
        • 2.Qb3#
      • 1...Sb4
        • 2.Sb6#
        • 2.Qb3#
      • 1...Be1!
  • Keys
    • 1.Bb7!
      • threat
        • 2.Ba6#
      • 1...Kb5
        • 2.Qxd3#
      • 1...Sxe5
        • 2.Qb3#
      • 1...Sb4
        • 2.Sb6#
      • 1...Sc5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(b);::S(C)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • P(d);S_CUTB(a),XS(E)::R(D)
      • Refutation
        • B(a);XS(E)
    • Try
      • B(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XB(G)::S(C)
      • Refutation
        • P(e);CHECK,XB(G)
    • Try
      • R(D);
      • Threat
        • R(D)
      • Refutation
        • B(a);
  • Actual
    • B(F);
    • Threat
      • B(F)
    • Vars
      • K(c);S_FLIGHT::QAB(B),XS(b)
      • S(b);OGATE,XR(D)::QAB1(B)
      • S(b);::S(C)
      • S(b);SBLOCK::S(E)
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