MESON Chess Problem Database

Problem Display
PID: 68199 (8/8/7B/3n4/4N2K/2pP1k2/2p3p1/2N3Qn w - - 0 1)

Roche, Jean

Phenix, 1997

8/8/7B/3n4/4N2K/2pP1k2/2p3p1/2N3Qn

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Qxf2#
    • 1...Sg3
      • 2.Qf2#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sb4
      • 2.Qe3#
    • 1...Sf4
      • 2.Sg5#
    • 1...Sb6
      • 2.Qe3#
    • 1...Sf6
      • 2.Qe3#
    • 1...Sc7
      • 2.Qe3#
    • 1...Se7
      • 2.Qe3#
  • Tries
    • 1.Kh3?
      • threat
        • 2.Qxg2#
      • 1...Sf2+
        • 2.Qxf2#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sf4+!
    • 1.Bd2?
      • threat
        • 2.Sg5#
      • 1...Se3
        • 2.Qxe3#
      • 1...cxd2!
    • 1.Be3?
      • threat
        • 2.Sg5#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sxe3!
    • 1.Bf4?
      • 1...Sxf4
        • 2.Sg5#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf2#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sb4
        • 2.Qe3#
      • 1...Sb6
        • 2.Qe3#
      • 1...Sf6
        • 2.Qe3#
      • 1...Sc7
        • 2.Qe3#
      • 1...Se7
        • 2.Qe3#
      • 1...Kxf4!
    • 1.Bg5?
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf2#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sb4
        • 2.Qe3#
      • 1...Sb6
        • 2.Qe3#
      • 1...Sf6
        • 2.Qe3#
      • 1...Sc7
        • 2.Qe3#
      • 1...Se7
        • 2.Qe3#
      • 1...Sf4!
    • 1.Qe1?
      • threat
        • 2.Qe2#
      • 1...Sg3
        • 2.Qf2#
        • 2.Qxg3#
      • 1...Sf4
        • 2.Sg5#
      • 1...g1S!
  • Keys
    • 1.Qh2!
      • 1...Sf4
        • 2.Qxf4#
      • 1...g1Q
        • 2.Qe2#
      • 1...g1S
        • 2.Qxh1#
      • 1...g1B
        • 2.Qxh1#
        • 2.Qe2#
      • 1...g1R
        • 2.Qe2#
      • 1...Sf2
        • 2.Qg3#
      • 1...Sg3
        • 2.Qxg3#
      • 1...Se3
        • 2.Qf4#
      • 1...Sb4
        • 2.Qf4#
      • 1...Sb6
        • 2.Qf4#
      • 1...Sf6
        • 2.Qf4#
      • 1...Sc7
        • 2.Qf4#
      • 1...Se7
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 9
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAR1(B),XS(a)
    • S(a);N_GUARD::QAR1(B)
    • S(f);N_GUARD::QAR1(B),XS(f)
    • S(f);N_GUARD::QAR1(B)
    • S(f);SBLOCK::S(D)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • QAB1(B),XP(c)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(B),XS(a)
        • S(f);N_GUARD::QAR1(B),XS(f)
      • Refutation
        • S(f);CHECK
    • Try
      • B(F);
      • Threat
        • S(D)
      • Vars
        • S(f);N_GUARD::QAR1(B),XS(f)
      • Refutation
        • P(d);XB(F)
    • Try
      • B(F);
      • Threat
        • S(D)
      • Vars
        • S(a);N_GUARD::QAR1(B),XS(a)
      • Refutation
        • S(f);XB(F)
    • Try
      • B(F);
      • Vars
        • S(f);SBLOCK,XB(F)::S(D)
        • S(a);N_GUARD::QAR1(B),XS(a)
        • S(a);N_GUARD::QAR1(B)
        • S(f);N_GUARD::QAR1(B),XS(f)
        • S(f);N_GUARD::QAR1(B)
      • Refutation
        • K(e);P-FLIGHT,XB(F)
    • Try
      • B(F);
      • Vars
        • S(a);N_GUARD::QAR1(B),XS(a)
        • S(a);N_GUARD::QAR1(B)
        • S(f);N_GUARD::QAR1(B),XS(f)
        • S(f);N_GUARD::QAR1(B)
      • Refutation
        • S(f);
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • S(f);SBLOCK::S(D)
      • Refutation
        • P(c);
  • Actual
    • Q(B);
    • Vars
      • S(f);N_GUARD::QAR1(B),XS(f)
      • P(c);OGATE::QAB1(B)
      • P(c);OGATEB::QAB(B),XS(a)
      • S(a);N_GUARD::QAR1(B)
      • S(a);N_GUARD::QAR1(B),XS(a)
      • S(f);N_GUARD::QAR1(B)
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