MESON Chess Problem Database

Problem Display
PID: 214539 (8/8/2Q5/5N2/5kp1/6N1/1p6/bK6 w - - 0 1)

Wash, Benjamin S

New York Turf, Field and Farm, 1878

8/8/2Q5/5N2/5kp1/6N1/1p6/bK6

#2

4 + 4

6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qd6#
    • 1...Kg5
      • 2.Qh6#
  • Tries
    • 1.Qh1?
      • 1...Kg5
        • 2.Qh6#
      • 1...Ke5!
    • 1.Qb5?
      • 1...Kf3
        • 2.Qf1#
      • 1...Kg5!
    • 1.Qb6?
      • threat
        • 2.Qe3#
      • 1...Ke5
        • 2.Qd6#
      • 1...Kg5
        • 2.Qh6#
      • 1...Kf3!
    • 1.Qd6+?
      • 1...Kg5
        • 2.Qh6#
      • 1...Kf3!
    • 1.Qe6?
      • threat
        • 2.Qe3#
      • 1...Kg5
        • 2.Qh6#
      • 1...Kf3!
    • 1.Qg6?
      • 1...Ke5
        • 2.Qd6#
      • 1...Kf3!
    • 1.Qh6+?
      • 1...Ke5
        • 2.Qd6#
      • 1...Kf3!
  • Keys
    • 1.Qa6!
      • 1...Kf3
        • 2.Qf1#
      • 1...Ke5
        • 2.Qd6#
      • 1...Kg5
        • 2.Qh6#

Anticipated by 206947(1859), 4506(1873), 32680(1873)

This anticipates 218488(1882), 218611(1882), 24321(1885), 181144(1904), 182379(1906), 109336(1920), 22076(1924), 206740(1925), 227725(1926), 76425(1929), 46372(1941), 18804(1958), 218807(1976), 138100(1981), 133136(1983), 211346(1986), 184446(2000), 47757(2003), 67253(2006), 232491(2012), 235007(2019)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB1(D)
  • Tries
    • Try
      • Q(D);
      • Vars
        • K(c);S_FLIGHT::QAB1(D)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(c);P-FLIGHT::QAR2(D)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • QAB1(D)
      • Vars
        • K(c);S_FLIGHT::QAB1(D)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(D)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(D);
      • Threat
        • QAB1(D)
      • Vars
        • K(c);S_FLIGHT::QAB1(D)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(c);S_FLIGHT::QAB1(D)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(D)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(c);P-FLIGHT::QAR2(D)
      • K(c);S_FLIGHT::QAB1(D)
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