MESON Chess Problem Database

Problem Display
PID: 165106 (6R1/8/8/4K3/3p1p2/4k3/R7/4N3 w - - 0 1)

Schlosser, Michael

Novi Temi, 1981

6R1/8/8/4K3/3p1p2/4k3/R7/4N3

#2

4 + 3

5454 Near Snap 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Rg3+?
      • 1...f3
        • 2.Rxf3#
      • 1...fxg3!
    • 1.Rg4?
      • 1...f3
        • 2.Re4#
      • 1...d3!
    • 1.Rd8?
      • 1...d3
        • 2.Rxd3#
      • 1...f3!
    • 1.Rf8?
      • 1...f3
        • 2.Rxf3#
      • 1...d3!
  • Keys
    • 1.Re8!
      • threat
        • 2.Kd5#
        • 2.Kf5#
        • 2.Kd6#
        • 2.Kf6#
      • 1...d3
        • 2.Kd5#
      • 1...f3
        • 2.Kf5#

This anticipates 212383(1986), 103461(1987)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • P(c);P_SPINP(c)::R1(D),XP(c)
      • Refutation
        • P(c);XR(D)
    • Try
      • R(D);
      • Vars
        • P(c);OGATE::R1(D)
      • Refutation
        • P(b);
    • Try
      • R(D);
      • Vars
        • P(b);OGATE::R1(D),XP(b)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Vars
        • P(c);OGATE::R1(D),XP(c)
      • Refutation
        • P(b);
  • Actual
    • R(D);
    • Threat
      • DUALS(4)
    • Vars
      • P(b);::R(D)+K(C)
      • P(c);::R(D)+K(C)
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