MESON Chess Problem Database

Problem Display
PID: 182335 (1B6/Q7/8/7K/4k3/8/8/5B2 w - - 0 1)

Popp, Johannes

Armee Schachzeitung, 1906

1B6/Q7/8/7K/4k3/8/8/5B2

#2

4 + 1

5454 Near Snap 2018
3713 Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Bg2+?
      • 1...Kf5
        • 2.Qf7#
      • 1...Kd3!
    • 1.Qd4+?
      • 1...Kf3
        • 2.Qf4#
      • 1...Kf5
        • 2.Bh3#
        • 2.Qe5#
      • 1...Kxd4!
    • 1.Qa4+?
      • 1...Ke3
        • 2.Qf4#
      • 1...Kf3
        • 2.Qf4#
      • 1...Kd5
        • 2.Qc4#
      • 1...Kf5!
    • 1.Qe7+?
      • 1...Kf3
        • 2.Qe2#
      • 1...Kd4
        • 2.Qe5#
      • 1...Kf5
        • 2.Bd3#
        • 2.Bh3#
        • 2.Qe5#
      • 1...Kd5!
    • 1.Qf7?
      • 1...Ke3
        • 2.Qf4#
      • 1...Kd4!
  • Keys
    • 1.Qc7!
      • 1...Ke3
        • 2.Qf4#
      • 1...Kf3
        • 2.Qf4#
      • 1...Kd4
        • 2.Qe5#
      • 1...Kd5
        • 2.Qc4#
      • 1...Kf5
        • 2.Qe5#

Anticipated by 2175(0000), 49566(0000), 47351(1888), 181089(1904), 121530(1905), 182229(1906)

This anticipates 194004(1917), 195071(1918), 205689(1925), 174121(1926), 227459(1926), 227672(1926), 227673(1926), 227674(1926), 227676(1926), 77127(1948), 10704(1967), 11832(1972), 12251(1976), 196647(1999), 248693(2007)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(C)
        • K(a);OGATE,S_FLIGHT::QAR1(C)
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(C)
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAB1(C)
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);S_FLIGHT::QAB1(C)
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