MESON Chess Problem Database

Problem Display
PID: 163551 (4R3/6N1/8/3p3r/n1PkpR2/Q6p/B1K5/6b1 w - - 0 1)

Bouchez, Laurent

Phenix, 1991

4R3/6N1/8/3p3r/n1PkpR2/Q6p/B1K5/6b1

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rh4
      • 2.Sf5#
    • 1...Rf5
      • 2.Sxf5#
    • 1...Rh6
      • 2.Sf5#
    • 1...Rh7
      • 2.Sf5#
    • 1...Rh8
      • 2.Sf5#
    • 1...Sb2
      • 2.Qa7#
    • 1...Sc3
      • 2.Qa7#
    • 1...Sc5
      • 2.Qc3#
  • Tries
    • 1.Rf1?
      • threat
        • 2.Rd1#
      • 1...Sc3
        • 2.Qa7#
      • 1...Sb2
        • 2.Qa7#
      • 1...Sc5
        • 2.Qc3#
      • 1...Be3!
    • 1.Rf2?
      • threat
        • 2.Rd2#
      • 1...Sc3
        • 2.Qa7#
      • 1...Sb2
        • 2.Qa7#
      • 1...Sc5
        • 2.Qc3#
      • 1...e3
        • 2.Rf4#
        • 2.Qxe3#
      • 1...Bxf2!
    • 1.cxd5?
      • threat
        • 2.Rfxe4#
        • 2.Rexe4#
      • 1...Sc3
        • 2.Qxc3#
        • 2.Qa7#
      • 1...Rh4
        • 2.Sf5#
        • 2.Rexe4#
      • 1...Sc5
        • 2.Qc3#
      • 1...Re5!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Se6#
      • 1...Rxf5
        • 2.Sxf5#
      • 1...Sc3
        • 2.Qa7#
      • 1...Rh6
        • 2.Rxd5#
      • 1...Sc5
        • 2.Qc3#
      • 1...e3
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(g);N_GUARD::S(F)
    • R(g);N_GUARD::S(F),XR(g)
    • S(c);OGATE::QAB(C)
    • S(c);N_GUARD,SBLOCK::QAB1(C)
  • Tries
    • Try
      • R(E);N_PINP(e)
      • Threat
        • R(E)
      • Vars
        • S(c);OGATE::QAB(C)
        • S(c);N_GUARD,SBLOCK::QAB1(C)
      • Refutation
        • B(a);
    • Try
      • R(E);N_PINP(e)
      • Threat
        • R(E)
      • Vars
        • S(c);OGATE::QAB(C)
        • S(c);N_GUARD,SBLOCK::QAB1(C)
      • Refutation
        • B(a);XR(E)
    • Try
      • P(D);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);N_GUARD::QAB1(C)
      • Refutation
        • R(g);
  • Actual
    • R(E);N_PINP(e)
    • Threat
      • S(F)
    • Vars
      • R(g);XR(E)::S(F),XR(g)
      • S(c);OGATE::QAB(C)
      • R(g);N_GUARD::R1(E),XP(f)
      • S(c);N_GUARD,SBLOCK::QAB1(C)
      • P(e);OGATEB::R(E)
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