MESON Chess Problem Database

Problem Display
PID: 87939 (8/p7/kp1N4/p2K4/3R3p/2RN4/3P3r/8 w - - 0 1)

Segers, Marcel

The Problemist, 1992

8/p7/kp1N4/p2K4/3R3p/2RN4/3P3r/8

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...a4
      • 2.Rxa4#
    • 1...b5
      • 2.Rc6#
  • Tries
    • 1.Ra3?
      • threat
        • 2.Sb4#
      • 1...a4
        • 2.Raxa4#
        • 2.Rdxa4#
      • 1...b5!
    • 1.Ra4?
      • threat
        • 2.Sb4#
      • 1...b5
        • 2.Rc6#
      • 1...Rxd2!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Sc5#
      • 1...a4
        • 2.Rxa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATEB::R(D),XP(c)
    • P(e);OGATEB::R(B)
  • Tries
    • Try
      • R(B);P_PINP(c)
      • Threat
        • S(C)
      • Refutation
        • P(e);
    • Try
      • R(D);P_PINP(c)
      • Threat
        • S(C)
      • Vars
        • P(e);OGATEB::R(B)
      • Refutation
        • R(a);P_PINS(C),XP(A)
  • Actual
    • R(B);P_PINP(e)
    • Threat
      • S(C)
    • Vars
      • P(c);OGATEB::R(D),XP(c)
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