MESON Chess Problem Database

Problem Display
PID: 35829 (5R2/3K4/8/2p1p3/3k4/1Q6/8/7B w - - 0 1)

Reitman, Mark

Source?, 1997

5R2/3K4/8/2p1p3/3k4/1Q6/8/7B

#2

4 + 3

3657 Izbrannie Shakhmatnie Zadachi Marka Reitmana 2000
5454 Near Snap 2008

SOLUTION

  • SOUND
  • Tries
    • 1.Rf4+?
      • 1...e4
        • 2.Rxe4#
      • 1...exf4!
    • 1.Rf5?
      • 1...e4
        • 2.Rd5#
      • 1...c4!
    • 1.Rc8?
      • 1...c4
        • 2.Rxc4#
      • 1...e4!
    • 1.Re8?
      • 1...e4
        • 2.Rxe4#
      • 1...c4!
  • Keys
    • 1.Rd8!
      • threat
        • 2.Kc6#
        • 2.Ke6#
        • 2.Kc7#
        • 2.Ke7#
        • 2.Kc8#
        • 2.Ke8#
      • 1...c4
        • 2.Kc6#
      • 1...e4
        • 2.Ke6#

Anticipated by 15131(1980), 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(6)
    • Vars
      • P(b);::R(D)+K(C)
      • P(c);::R(D)+K(C)
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