MESON Chess Problem Database

Problem Display
PID: 92914 (8/1p6/5RN1/8/3k4/8/8/1K3B1Q w - - 0 1)

Svedberg, John Arvid

Schackvarlden, 1925

8/1p6/5RN1/8/3k4/8/8/1K3B1Q

#2

5 + 2

6490 yacpdb 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Qh4+?
      • 1...Ke3
        • 2.Qf4#
      • 1...Kc5
        • 2.Qc4#
      • 1...Kd5
        • 2.Qc4#
      • 1...Kc3!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Qe5#
      • 1...Kc3
        • 2.Qb2#
      • 1...Ke3
        • 2.Qf4#
      • 1...Ke4
        • 2.Qe5#
      • 1...Kc5
        • 2.Qd6#
      • 1...Kd5
        • 2.Qe5#

Anticipated by 1937(1853), 222384(1884)

This anticipates 53663(1950), 157915(1958)

FEATURES

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