MESON Chess Problem Database

Problem Display
PID: 89109 (Q7/8/8/8/8/2n5/7p/R2RK1k1 w Q - 0 1)

Rice, John Michael

The Problemist, 1992

Q7/8/8/8/8/2n5/7p/R2RK1k1

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Ke2#
    • 1...Sa2
      • 2.Ke2#
    • 1...Se2
      • 2.Kxe2#
    • 1...Sa4
      • 2.Ke2#
    • 1...Sb5
      • 2.Ke2#
  • Tries
    • 1.Qf3?
      • threat
        • 2.Qf1#
      • 1...h1Q
        • 2.Qf2#
      • 1...h1B
        • 2.Qf2#
      • 1...h1R
        • 2.Qf2#
        • 2.Qg3#
      • 1...h1S!
  • Keys
    • 1.Rd2!
      • threat
        • 2.Qg2#
      • 1...Se4
        • 2.0-0-0#
      • 1...Sd5
        • 2.0-0-0#
      • 1...h1Q
        • 2.Qa7#
      • 1...h1B
        • 2.Qa7#
      • 1...Se2
        • 2.Kxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(c);::R(B)+K(C)
    • S(c);::R(B)+K(C),XS(c)
  • Tries
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Vars
        • P(b);SBLOCK::QAB1(D)
      • Refutation
        • P(b);
  • Actual
    • R(B);
    • Threat
      • QAR1(D)
    • Vars
      • S(c);::0-0-0
      • P(b);SBLOCK::QAB(D)
      • S(c);::R(A)+K(C),XS(c)
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