MESON Chess Problem Database

Problem Display
PID: 23002 (8/3K4/8/2NkN3/3b4/3Q4/8/8 w - - 0 1)

Hartoch, H

van Zoutevee, ?

Schachkalendar van het Noordelikj SB, 1881

8/3K4/8/2NkN3/3b4/3Q4/8/8

#2

4 + 2

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Kc7?
      • 1...Kxc5
        • 2.Qc4#
      • 1...Kxe5!
    • 1.Ke7?
      • 1...Kxe5
        • 2.Qe4#
      • 1...Kxc5!
    • 1.Qb3+?
      • 1...Kxc5
        • 2.Sd3#
      • 1...Kxe5!
    • 1.Qf3+?
      • 1...Kxe5
        • 2.Sd3#
      • 1...Kxc5!
  • Keys
    • 1.Qd2!
      • 1...Kxc5
        • 2.Qa5#
      • 1...Kxe5
        • 2.Qg5#

Anticipated by 32639(0000), 206996(1859)

This anticipates 222837(1884), 194199(1917), 169805(1945), 2154(1964), 109480(1986), 217452(1992), 103549(2006)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(b);N_SPINB(a),P-FLIGHT,XS(B)::QAR1(A)
      • Refutation
        • K(b);N_SPINB(a),P-FLIGHT,XS(C)
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(b);N_SPINB(a),P-FLIGHT,XS(C)::QAR1(A)
      • Refutation
        • K(b);N_SPINB(a),P-FLIGHT,XS(B)
    • Try
      • Q(A);CHECK,N_PINB(a)
      • Vars
        • K(b);P-FLIGHT,XS(B)::S(C)
      • Refutation
        • K(b);P-FLIGHT,XS(C)
    • Try
      • Q(A);CHECK,N_PINB(a)
      • Vars
        • K(b);P-FLIGHT,XS(C)::S(B)
      • Refutation
        • K(b);P-FLIGHT,XS(B)
  • Actual
    • Q(A);
    • Vars
      • K(b);N_SPINB(a),OGATEB,P-FLIGHT,XS(B)::QAR2(A)
      • K(b);N_SPINB(a),OGATEB,P-FLIGHT,XS(C)::QAR2(A)
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