MESON Chess Problem Database

Problem Display
PID: 263805 (3K4/5p2/2N4Q/2Pk1P2/P1n5/B6p/2N1P3/1B6 w - - 0 1)

Kouwenhoven, JT

1st HM., Tijdschrift vd NSB, 1894

3K4/5p2/2N4Q/2Pk1P2/P1n5/B6p/2N1P3/1B6

#2

10 + 4

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Se3#
      • 2.S2b4#
    • 1...Sb2
      • 2.Se3#
    • 1...Sd2
      • 2.Se3#
    • 1...Se3
      • 2.Sxe3#
    • 1...Sa5
      • 2.Se3#
    • 1...Se5
      • 2.Se3#
    • 1...Sb6
      • 2.Se3#
  • Tries
    • 1.Qd2+?
      • 1...Ke4
        • 2.Sa1#
        • 2.Se1#
        • 2.S2b4#
      • 1...Kxc6
        • 2.Qd7#
      • 1...Sxd2!
    • 1.Qf4?
      • threat
        • 2.Se7#
        • 2.Qf3#
      • 1...Kxc6
        • 2.Qf3#
        • 2.Qe4#
      • 1...Sb2
        • 2.Se7#
      • 1...Sd2
        • 2.Se7#
      • 1...Se3
        • 2.Se7#
      • 1...Sa5
        • 2.Se7#
      • 1...Se5
        • 2.Se7#
      • 1...Sb6
        • 2.Se7#
      • 1...Sd6
        • 2.Se7#
      • 1...Sxa3!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qh1#
      • 1...Ke4
        • 2.S2b4#
      • 1...Kxc6
        • 2.Qh1#
      • 1...Sxa3
        • 2.S2b4#
      • 1...Sb2
        • 2.S2b4#
      • 1...Sd2
        • 2.S2b4#
      • 1...Se3
        • 2.S2b4#
      • 1...Sa5
        • 2.S2b4#
      • 1...Se5
        • 2.S2b4#
      • 1...Sb6
        • 2.S2b4#
      • 1...Sd6
        • 2.S2b4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::S(B)
    • S(b);N_GUARD::S(B),XS(b)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT,XS(H)::QAB1(I)
      • Refutation
        • S(b);XQ(I)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::S(H)
      • Refutation
        • S(b);XB(D)
  • Actual
    • Q(I);
    • Threat
      • QAB(I)
    • Vars
      • K(c);N_GUARD,S_FLIGHT::B(A)+S(B)
      • K(c);S_FLIGHT,XS(H)::QAB(I)
      • S(b);XB(D)::S(B)
      • S(b);::S(B)
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