MESON Chess Problem Database

Problem Display
PID: 38803 (8/8/1n6/3pQ3/8/RP1k4/8/3K4 w - - 0 1)

Lincoln, Robert A

Smena, 1996

8/8/1n6/3pQ3/8/RP1k4/8/3K4

#2

4 + 3

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Tries
    • 1.Ra5?
      • 1...Sa4
        • 2.Rxd5#
      • 1...Sc4
        • 2.Rxd5#
      • 1...Sd7
        • 2.Rxd5#
      • 1...Sa8
        • 2.Rxd5#
      • 1...Sc8
        • 2.Rxd5#
      • 1...d4!
    • 1.Qe2+?
      • 1...Kc3
        • 2.Qd2#
      • 1...Kd4!
  • Keys
    • 1.Qf4!
      • threat
        • 2.b4#
      • 1...Kc3
        • 2.Qd2#
      • 1...Sa4
        • 2.bxa4#
      • 1...Sc4
        • 2.bxc4#
      • 1...d4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Vars
        • S(c);N_GUARD::R(B),XP(b)
      • Refutation
        • P(b);
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(D)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(D);
    • Threat
      • R(B)+P(C)
    • Vars
      • K(a);P-FLIGHT::QAB1(D)
      • S(c);OGATE::R(B)+P(C),XS(c)
      • P(b);SBLOCK::QAR2(D)
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