MESON Chess Problem Database

Problem Display
PID: 181144 (8/8/8/8/2k5/P1N1P2K/2Q5/B7 w - - 0 1)

van Dijk, Johannes

Utrecht Dagblad, 1904

8/8/8/8/2k5/P1N1P2K/2Q5/B7

#2

6 + 1

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4+?
      • 1...Kb3
        • 2.Qa4#
      • 1...Kc5!
    • 1.Qh7?
      • 1...Kc5
        • 2.Qc7#
      • 1...Kb3!
    • 1.Qa2+?
      • 1...Kd3
        • 2.Qe2#
      • 1...Kc5!
    • 1.Qb2?
      • threat
        • 2.Qb5#
      • 1...Kd3
        • 2.Qe2#
      • 1...Kc5!
    • 1.Qd2?
      • threat
        • 2.Qd5#
      • 1...Kb3
        • 2.Qa2#
      • 1...Kc5!
    • 1.Qe2+?
      • 1...Kb3
        • 2.Qa2#
      • 1...Kc5!
    • 1.Qf2?
      • 1...Kb3
        • 2.Qa2#
      • 1...Kd3
        • 2.Qe2#
      • 1...Kc5!
    • 1.Qg2?
      • threat
        • 2.Qd5#
      • 1...Kb3
        • 2.Qa2#
      • 1...Kd3
        • 2.Qe2#
      • 1...Kc5!
    • 1.e4?
      • 1...Kd4
        • 2.Sd1#
        • 2.Sd5#
      • 1...Kc5!
  • Keys
    • 1.Qh2!
      • 1...Kb3
        • 2.Qa2#
      • 1...Kd3
        • 2.Qe2#
      • 1...Kc5
        • 2.Qc7#

Anticipated by 4506(1873), 32680(1873), 214539(1878), 218611(1882), 24321(1885)

This anticipates 109336(1920), 22076(1924), 227725(1926), 76425(1929), 46372(1941), 18804(1958), 138100(1981), 133136(1983), 211346(1986), 184446(2000), 47757(2003), 67253(2006), 232491(2012), 235007(2019)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(E);
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);P-FLIGHT::QAR2(B)
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