MESON Chess Problem Database

Problem Display
PID: 181085 (7Q/5B2/5p1b/6k1/8/5K2/8/8 w - - 0 1)

Munck, Laurits Andreas

Svenska Dagbladet, 1904

7Q/5B2/5p1b/6k1/8/5K2/8/8

#2

3 + 3

6490 yacpdb 2018
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kh4
      • 2.Qxh6#
    • 1...Bg7
      • 2.Qh5#
    • 1...Bf8
      • 2.Qh5#
    • 1...f5
      • 2.Qd8#
  • Tries
    • 1.Kg3?
      • 1...Bg7
        • 2.Qh5#
      • 1...Bf8
        • 2.Qh5#
      • 1...f5
        • 2.Qd8#
      • 1...Kf5!
    • 1.Qxh6+?
      • 1...Kf5
        • 2.Qf4#
        • 2.Qh5#
      • 1...Kxh6!
    • 1.Qh7?
      • 1...Kh4
        • 2.Qxh6#
      • 1...Bg7
        • 2.Qh5#
      • 1...Bf8
        • 2.Qh5#
      • 1...f5!
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qf4#
      • 1...Kh4
        • 2.Qg3#
      • 1...Kf5
        • 2.Qb5#
      • 1...f5
        • 2.Qd8#

This anticipates 194214(1917), 247699(1949)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(a);P_SPINB(c),S_FLIGHT::QAR2(C),XB(c)
    • B(c);OGATE::QAR1(C)
    • P(b);OGATEB,SBLOCK::QAB(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • B(c);OGATE::QAR1(C)
        • P(b);OGATEB,SBLOCK::QAB(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK,XB(c)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Vars
        • K(a);P_SPINB(c),S_FLIGHT::QAR2(C),XB(c)
        • B(c);OGATE::QAR1(C)
      • Refutation
        • P(b);
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(a);S_FLIGHT::QAB1(C)
      • K(a);P-FLIGHT::QAR(C)
      • P(b);OGATEB,SBLOCK::QAB(C)
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