MESON Chess Problem Database

Problem Display
PID: 9454 (3n2Q1/3N3p/n5bP/1p2N3/4k3/2R1P2B/7P/4K3 w - - 0 1)

Colpa, Johannes J

1st HM., Literary Digest, 1903

3n2Q1/3N3p/n5bP/1p2N3/4k3/2R1P2B/7P/4K3

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Bg2#
      • 2.Qg2#
    • 1...Bf7
      • 2.Qg2#
    • 1...Be8
      • 2.Qg2#
    • 1...Se6
      • 2.Qa8#
    • 1...Sf7
      • 2.Qa8#
    • 1...b4
      • 2.Qc4#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sd2#
      • 1...Kf3
        • 2.Sd2#
      • 1...Bf7
        • 2.Qg2#
      • 1...Se6
        • 2.Qa8#
      • 1...Sf7
        • 2.Qa8#
      • 1...bxc4!
    • 1.Bf5+?
      • 1...Bxf5
        • 2.Qg2#
      • 1...Kxf5!
    • 1.Qe6?
      • threat
        • 2.Sf6#
        • 2.Bg2#
      • 1...Bh5
        • 2.Sf6#
        • 2.Bf5#
      • 1...Sxe6!
    • 1.Qxg6+?
      • 1...Kd5
        • 2.Bg2#
        • 2.Rd3#
        • 2.Qd3#
      • 1...hxg6!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sg5#
      • 1...Kf3
        • 2.Sg5#
      • 1...Kd5
        • 2.Sf6#
      • 1...Bxf7
        • 2.Qg2#
      • 1...Sxf7
        • 2.Qa8#
      • 1...Se6
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(d);OGATE::QAB(I)
    • S(f);OGATE::QAB(I)
    • P(b);N_GUARD::QAR2(I)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • K(a);S_FLIGHT::S(F)
        • B(d);OGATE::QAB(I)
        • S(f);OGATE::QAB(I)
      • Refutation
        • P(b);XS(F)
    • Try
      • B(E);CHECK
      • Vars
        • B(d);OGATE,SBLOCK,XB(E)::QAB(I)
      • Refutation
        • K(a);S_FLIGHT,XB(E)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Refutation
        • S(f);XQ(I)
    • Try
      • Q(I);CHECK,XB(d)
      • Refutation
        • P(e);XQ(I)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(a);S_FLIGHT::S(F)
      • K(a);S_FLIGHT::S(H)
      • B(d);OGATE,XS(F)::QAB(I)
      • S(f);OGATE,XS(F)::QAB(I)
      • S(f);OGATE::QAB(I)
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