MESON Chess Problem Database

Problem Display
PID: 76413 (8/4p3/N3N3/4k3/4b1QK/4P3/8/8 w - - 0 1)

Lakeland, Rev T

The Tablet, 1928

8/4p3/N3N3/4k3/4b1QK/4P3/8/8

#2

5 + 3

5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sec5?
      • threat
        • 2.Qe6#
      • 1...Kd5
        • 2.Qe6#
      • 1...Kd6
        • 2.Qe6#
      • 1...Bd5
        • 2.Qf4#
      • 1...Bf5
        • 2.Qd4#
      • 1...e6
        • 2.Qxe6#
      • 1...Kf6!
    • 1.Sg5?
      • threat
        • 2.Qe6#
      • 1...Kd5
        • 2.Qe6#
      • 1...Kd6
        • 2.Qe6#
      • 1...Bd5
        • 2.Qf4#
      • 1...Bf5
        • 2.Qd4#
      • 1...e6
        • 2.Qxe6#
      • 1...Kf6!
    • 1.Sec7?
      • threat
        • 2.Qe6#
        • 2.Qf4#
      • 1...Kd6
        • 2.Qe6#
      • 1...Bd5
        • 2.Qf4#
      • 1...Bf5
        • 2.Qd4#
      • 1...e6
        • 2.Qxe6#
        • 2.Qf4#
      • 1...Kf6!
    • 1.Sg7?
      • threat
        • 2.Qe6#
      • 1...Kd5
        • 2.Qe6#
      • 1...Kd6
        • 2.Qe6#
      • 1...Bd5
        • 2.Qf4#
      • 1...Bf5
        • 2.Qd4#
      • 1...e6
        • 2.Qxe6#
      • 1...Kf6!
    • 1.Sf8?
      • threat
        • 2.Qe6#
      • 1...Kd5
        • 2.Qe6#
      • 1...Kd6
        • 2.Qe6#
      • 1...Bd5
        • 2.Qf4#
      • 1...Bf5
        • 2.Qd4#
      • 1...e6
        • 2.Qxe6#
      • 1...Kf6!
  • Keys
    • 1.Sd8!
      • threat
        • 2.Qe6#
      • 1...Kd5
        • 2.Qe6#
      • 1...Kd6
        • 2.Qe6#
      • 1...Kf6
        • 2.Qg5#
      • 1...Bd5
        • 2.Qf4#
      • 1...Bf5
        • 2.Qd4#
      • 1...e6
        • 2.Qxe6#

This anticipates 180955(1953), 186847(2018)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • K(b);S_FLIGHT::QAR1(B)
        • B(a);SBLOCK::QAB1(B)
        • B(a);OGATE,SBLOCK::QAB1(B)
        • P(c);::QAR1(B),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • K(b);S_FLIGHT::QAR1(B)
        • B(a);SBLOCK::QAB1(B)
        • B(a);OGATE,SBLOCK::QAB1(B)
        • P(c);::QAR1(B),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
        • B(a);::QAB1(B)
        • B(a);OGATE,SBLOCK::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • K(b);S_FLIGHT::QAR1(B)
        • B(a);SBLOCK::QAB1(B)
        • B(a);OGATE::QAB1(B)
        • P(c);::QAR1(B),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • K(b);S_FLIGHT::QAR1(B)
        • B(a);SBLOCK::QAB1(B)
        • B(a);OGATE,SBLOCK::QAB1(B)
        • P(c);::QAR1(B),XP(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • QAR1(B)
    • Vars
      • K(b);P-FLIGHT::QAB1(B)
      • K(b);S_FLIGHT::QAR1(B)
      • K(b);S_FLIGHT::QAB1(B)
      • B(a);SBLOCK::QAB1(B)
      • B(a);OGATE,SBLOCK::QAB1(B)
      • P(c);::QAR1(B),XP(c)
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