MESON Chess Problem Database

Problem Display
PID: 234434 (3b4/8/2p2p2/1R1R4/2k5/2N5/2K5/B7 w - - 0 1)

Lincoln, Robert A

Comm., Die Schwalbe, 1993

3b4/8/2p2p2/1R1R4/2k5/2N5/2K5/B7

#2

5 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sb1?
      • threat
        • 2.Sd2#
        • 2.Sa3#
        • 2.Rdc5#
      • 1...cxd5
        • 2.Sa3#
      • 1...c5
        • 2.Rdxc5#
      • 1...Ba5
        • 2.Sa3#
        • 2.Rdc5#
      • 1...Bb6
        • 2.Sd2#
        • 2.Sa3#
      • 1...Be7
        • 2.Sd2#
      • 1...cxb5!
    • 1.Sa4?
      • threat
        • 2.Sb2#
        • 2.Rdc5#
      • 1...cxb5
        • 2.Rd4#
      • 1...c5
        • 2.Rdxc5#
      • 1...Bb6
        • 2.Sb2#
        • 2.Sxb6#
      • 1...Be7
        • 2.Sb2#
        • 2.Sb6#
      • 1...cxd5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sd2#
        • 2.Sd6#
        • 2.Rdc5#
      • 1...cxb5
        • 2.Rd4#
      • 1...cxd5
        • 2.Sd6#
      • 1...c5
        • 2.Rdxc5#
      • 1...Ba5
        • 2.Sd6#
        • 2.Rdc5#
      • 1...Bb6
        • 2.Sd2#
        • 2.Sd6#
      • 1...Bc7
        • 2.Sd2#
        • 2.Rdc5#
      • 1...Be7
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);XR(E)::S(C)
        • P(b);::R1(E),XP(b)
        • B(d);::S(C)
      • Refutation
        • P(b);XR(D)
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);SBLOCK,XR(D)::R1(E)
        • P(b);::R1(E),XP(b)
      • Refutation
        • P(b);XR(E)
  • Actual
    • S(C);
    • Threat
      • DUALS(3)
    • Vars
      • P(b);SBLOCK,XR(D)::R1(E)
      • P(b);XR(E)::S(C)
      • P(b);::R1(E),XP(b)
      • B(d);::S(C)
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