MESON Chess Problem Database

Problem Display
PID: 93782 (1n3B2/1p5K/1Pkn3p/3N3r/Pp2Q2r/1P1N1P1B/2bR4/1qR5 w - - 0 1)

Jancek, Jan

Sachove umeni (Ceskoslovensky sach), 1954

1n3B2/1p5K/1Pkn3p/3N3r/Pp2Q2r/1P1N1P1B/2bR4/1qR5

#2

12 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.S3xb4#
    • 1...Sxe4
      • 2.S3xb4#
    • 1...Sb5
      • 2.S3xb4#
    • 1...Sf5
      • 2.Se5#
    • 1...Sf7
      • 2.S3xb4#
    • 1...Sc8
      • 2.S3xb4#
    • 1...Se8
      • 2.S3xb4#
  • Tries
    • 1.Rcxc2+?
      • 1...Sc4
        • 2.S3xb4#
        • 2.Rxc4#
        • 2.Qe6#
      • 1...Qxc2!
    • 1.Rdxc2+?
      • 1...Sc4
        • 2.S3xb4#
        • 2.Rxc4#
        • 2.Qe6#
      • 1...Qxc2!
    • 1.Qg6?
      • threat
        • 2.Qxd6#
      • 1...Kxd5
        • 2.Qxd6#
      • 1...Rxd5!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxd6#
      • 1...Kxd5
        • 2.Qxd6#
      • 1...Rxd5
        • 2.Qc7#
      • 1...Sc4
        • 2.Qc5#
      • 1...Se4
        • 2.S3xb4#
      • 1...Sb5
        • 2.Qc5#
      • 1...Sf5
        • 2.Se5#
      • 1...Sf7
        • 2.Qc5#
      • 1...Sc8
        • 2.Qc5#
      • 1...Se8
        • 2.Qc5#

This is a version of 93778

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(g);N_SPINB(b)::S(D),XP(c)
    • S(g);XQ(H)::S(D),XP(c)
    • S(g);::S(D),XP(c)
    • S(g);S_CUTR(e)::S(D)
  • Tries
    • Try
      • R(A);CHECK,XB(b)
      • Refutation
        • Q(a);XR(A)
    • Try
      • R(B);CHECK,XB(b)
      • Refutation
        • Q(a);P_SPINQ(a),XR(B)
    • Try
      • Q(H);P_PINS(g)
      • Threat
        • QAR1(H),XS(g)
      • Vars
        • K(f);N_SPINB(b),N_SPINS(g),S_FLIGHT,XS(I)::QAR1(H),XS(g)
      • Refutation
        • R(e);XS(I)
  • Actual
    • Q(H);P_SPINS(D)
    • Threat
      • QAR1(H),XS(g)
    • Vars
      • K(f);N_SPINB(b),S_FLIGHT,XS(I)::QAR1(H),XS(g)
      • R(e);SBLOCK,XS(I)::QAR1(H)
      • S(g);N_SPINB(b),OGATE::QAR1(H)
      • S(g);N_PINS(D)::S(D),XP(c)
      • S(g);OGATE::QAR1(H)
      • S(g);N_PINS(D)::S(D)
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