MESON Chess Problem Database

Problem Display
PID: 107734 (8/3rpN2/5p2/pp5q/1BR1p3/K2kpP1Q/N1R3Bb/5r2 w - - 0 1)

Benoit, Marc

Source?, 1974

8/3rpN2/5p2/pp5q/1BR1p3/K2kpP1Q/N1R3Bb/5r2

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Sxc1#
    • 1...Rf2
      • 2.Sc1#
    • 1...Rxf3
      • 2.Sc1#
    • 1...Rd4
      • 2.R4c3#
    • 1...axb4+
      • 2.Sxb4#
    • 1...e5
      • 2.Qxd7#
  • Tries
    • 1.Qxd7+?
      • 1...Qd5
        • 2.Qxd5#
      • 1...Bd6!
  • Keys
    • 1.f4!
      • threat
        • 2.Bxe4#
      • 1...axb4+
        • 2.Sxb4#
      • 1...Rxf4
        • 2.Sc1#
      • 1...bxc4
        • 2.Rd2#
      • 1...Qf3
        • 2.Qxd7#
      • 1...Qg6
        • 2.Bxf1#
        • 2.Qxd7#
      • 1...Qd5
        • 2.Bxf1#
      • 1...Qe5
        • 2.Bxf1#
      • 1...Qf5
        • 2.Bxf1#
      • 1...Qh7
        • 2.Bxf1#
        • 2.Qxd7#
      • 1...Rf3
        • 2.Sc1#
      • 1...Rd4
        • 2.R4c3#
      • 1...f5
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • R(a);N_GUARD::S(A),XR(a)
    • R(a);N_GUARD::S(A)
    • R(a);N_GUARD,XP(E)::S(A)
    • R(j);SBLOCK::R1(H)
    • P(f);CHECK,XB(G)::S(A),XP(f)
    • P(k);S_CUTB(b),S_CUTQ(h)::QAR(F),XR(j)
  • Tries
    • Try
      • Q(F);CHECK,XR(j)
      • Vars
        • Q(h);N_GUARD,P_SPINQ(h)::QAR2(F),XQ(h)
      • Refutation
        • B(b);P_PINB(G),P_SPINB(b)
  • Actual
    • P(E);P_PINP(d)
    • Threat
      • B(C),XP(e)
    • Vars
      • P(f);CHECK,XB(G)::S(A),XP(f)
      • R(a);N_GUARD,XP(E)::S(A)
      • P(g);SBLOCK,XR(H)::R1(B)
      • Q(h);N_GUARD,N_SPINP(d)::QAR(F),XR(j)
      • Q(h);N_GUARD::B(C),XR(a)
      • R(a);N_GUARD,N_SPINP(d)::S(A)
      • R(j);SBLOCK::R1(H)
      • P(i);N_GUARD,S_CUTQ(h)::S(I)
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