MESON Chess Problem Database

Problem Display
PID: 97503 (4n1Q1/3n2b1/2N3rr/KNpP2pp/1pk5/4R3/2P5/7B w - - 0 1)

Bernard, Edmond

Problemas, 1980

4n1Q1/3n2b1/2N3rr/KNpP2pp/1pk5/4R3/2P5/7B

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf6
      • 2.Re4#
    • 1...Bf8
      • 2.Re4#
    • 1...Se5
      • 2.Re4#
    • 1...Sdf6
      • 2.Se5#
    • 1...Sef6
      • 2.Sd6#
    • 1...b3
      • 2.Sa3#
      • 2.cxb3#
  • Tries
    • 1.Se5+?
      • 1...Sxe5
        • 2.Re4#
      • 1...Bxe5!
    • 1.Bg2?
      • threat
        • 2.Bf1#
      • 1...Rf6
        • 2.Re4#
      • 1...Se5
        • 2.Re4#
      • 1...Re6!
    • 1.Bf3?
      • threat
        • 2.Be2#
      • 1...Se5
        • 2.Re4#
      • 1...Re6!
    • 1.Rc3+?
      • 1...bxc3
        • 2.Sa3#
      • 1...Bxc3!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qf1#
      • 1...Rf6
        • 2.Re4#
      • 1...Bf6
        • 2.d6#
      • 1...Se5
        • 2.Re4#
      • 1...Sdf6
        • 2.Se5#
      • 1...Sef6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(f);S_CUTB(i)::R(C)
    • B(i);N_GUARD::R(C)
    • S(h);S_CUTB(i)::R(C)
    • S(h);N_GUARD,S_CUTB(i)::S(G)
    • S(j);N_GUARD,S_CUTR(f)::S(E)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • S(h);XS(G)::R(C)
      • Refutation
        • B(i);XS(G)
    • Try
      • B(A);
      • Threat
        • B(A)
      • Vars
        • R(f);S_CUTB(i)::R(C)
        • S(h);S_CUTB(i)::R(C)
      • Refutation
        • R(f);
    • Try
      • B(A);
      • Threat
        • B(A)
      • Vars
        • S(h);S_CUTB(i)::R(C)
      • Refutation
        • R(f);
    • Try
      • R(C);CHECK
      • Vars
        • P(a);SBLOCK,XR(C)::S(E)
      • Refutation
        • B(i);XR(C)
  • Actual
    • Q(H);
    • Threat
      • QAB(H)
    • Vars
      • R(f);S_CUTB(i)::R(C)
      • B(i);S_CUTR(f)::QAB(H)+P(F)
      • S(h);S_CUTB(i)::R(C)
      • S(h);N_GUARD,S_CUTB(i)::S(G)
      • S(j);N_GUARD,S_CUTR(f)::S(E)
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