MESON Chess Problem Database

Problem Display
PID: 108993 (6q1/8/2n2Pp1/p2N2Q1/R2nk1P1/2KN1r2/2PP1b2/5b1B w - - 0 1)

Monnier, Charles

Bulletin Ouvrier des Echecs, 1938

6q1/8/2n2Pp1/p2N2Q1/R2nk1P1/2KN1r2/2PP1b2/5b1B

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Qf4#
    • 1...Bxd3
      • 2.cxd3#
    • 1...Be3
      • 2.Sc5#
    • 1...Sb4
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sa7
      • 2.Qe5#
    • 1...Se7
      • 2.Qe5#
    • 1...Sb8
      • 2.Qe5#
    • 1...Sd8
      • 2.Qe5#
  • Tries
    • 1.Kb2?
      • threat
        • 2.Sxf2#
        • 2.Sc5#
        • 2.Sc3#
      • 1...Qxd5
        • 2.Sxf2#
        • 2.Qf4#
      • 1...Bxd3
        • 2.Sc3#
      • 1...Se5
        • 2.Sc3#
        • 2.Qxe5#
      • 1...Qf8
        • 2.Sxf2#
        • 2.Sc3#
      • 1...Bg2
        • 2.Sc5#
        • 2.Sc3#
      • 1...Be1
        • 2.Sc5#
        • 2.Sc3#
      • 1...Bg1
        • 2.Sc5#
        • 2.Sc3#
      • 1...Be3
        • 2.Sc5#
        • 2.Sc3#
      • 1...Bg3
        • 2.Sc5#
        • 2.Sc3#
      • 1...Bh4
        • 2.Sc5#
        • 2.Sc3#
      • 1...Qb8+!
    • 1.Rxd4+?
      • 1...Sxd4
        • 2.Qe5#
      • 1...Bxd4+!
  • Keys
    • 1.Kc4!
      • threat
        • 2.Qf4#
      • 1...Qxd5+
        • 2.Qxd5#
      • 1...Bxd3+
        • 2.cxd3#
      • 1...Se5+
        • 2.Qxe5#
      • 1...Qb8
        • 2.Sc3#
      • 1...Bg2
        • 2.Sc5#
      • 1...Be3
        • 2.Qxe3#
      • 1...Bg3
        • 2.Qe3#
      • 1...Se2
        • 2.Sxf2#
      • 1...Se6
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • Q(i);SBLOCK,XS(H)::QAR1(I)
    • B(a);OGATE,XS(E)::P(B),XB(a)
    • B(b);N_PINS(E)::S(E)
    • S(g);N_GUARD,N_SPINS(d)::QAR1(I)
    • S(g);N_GUARD::QAR1(I),XS(g)
    • S(g);N_GUARD::QAR1(I)
  • Tries
    • Try
      • K(D);N_SPINS(E),S_FLIGHT
      • Threat
        • DUALS(3)
      • Vars
        • B(a);XS(E)::S(H)
      • Refutation
        • Q(i);CHECK
    • Try
      • R(F);CHECK,XS(d)
      • Vars
        • S(g);XR(F)::QAR1(I)
      • Refutation
        • B(b);CHECK,XR(F)
  • Actual
    • K(D);N_PINS(d),P-FLIGHT
    • Threat
      • QAR1(I)
    • Vars
      • Q(i);CHECK,OGATE,XS(H)::QAB1(I),XQ(i)
      • B(a);CHECK,OGATE,P_PINS(H),XS(E)::P(B),XB(a)
      • S(g);CHECK,N_GUARD::QAR1(I),XS(g)
      • Q(i);::S(H)
      • B(a);N_PINS(E),N_SPINR(c),P_PINS(H)::S(E)
      • B(b);N_GUARD::QAR1(I),XB(b)
      • B(b);N_GUARD::QAR1(I)
      • S(d);N_PINS(E),P_PINS(H)::S(E),XB(b)
      • S(d);::S(H)
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