MESON Chess Problem Database

Problem Display
PID: 266956 (2q5/2RN4/1PBP4/8/1R6/P1k5/2P5/2B2K2 w - - 0 1)

Lertoria, Ernest

The Problemist, 1955

2q5/2RN4/1PBP4/8/1R6/P1k5/2P5/2B2K2

#2

10 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Qa6+
      • 2.Bb5#
    • 1...Qb7
      • 2.Bxb7#
    • 1...Qxd7
      • 2.Bxd7#
    • 1...Qa8
      • 2.Bb7#
      • 2.Bxa8#
    • 1...Qe8
      • 2.Bh1#
      • 2.Bg2#
      • 2.Bf3#
      • 2.Ba4#
      • 2.Be4#
      • 2.Bb5#
      • 2.Bd5#
      • 2.Bb7#
      • 2.Ba8#
    • 1...Qf8+
      • 2.Bf3#
    • 1...Qg8
      • 2.Bd5#
    • 1...Qh8
      • 2.Bh1#
      • 2.Bg2#
      • 2.Bf3#
      • 2.Ba4#
      • 2.Be4#
      • 2.Bb5#
      • 2.Bd5#
      • 2.Bb7#
      • 2.Ba8#
  • Keys
    • 1.Se5!
      • threat
        • 2.Rc4#
      • 1...Qh3+
        • 2.Bg2#
      • 1...Qf5+
        • 2.Bf3#
      • 1...Qa6+
        • 2.Bb5#
      • 1...Qf8+
        • 2.Bf3#
      • 1...Kxc2
        • 2.Ba4#
      • 1...Qg4
        • 2.Be4#
      • 1...Qe6
        • 2.Bd5#
      • 1...Qg8
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • Q(b);CHECK,N_GUARD::R(I)+B(G)
    • Q(b);N_GUARD::R(I)+B(G),XQ(b)
    • Q(b);OGATE,XS(J)::R(I)+B(G),XQ(b)
    • Q(b);N_GUARD::R(I)+B(G)
  • Actual
    • S(J);
    • Threat
      • R1(E)
    • Vars
      • Q(b);CHECK,N_GUARD::R(I)+B(G)
      • K(a);P-FLIGHT,XP(C)::R(I)+B(G),DCHECK
      • Q(b);N_GUARD::R(I)+B(G)
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Developed and maintained by Brian Stephenson.
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