MESON Chess Problem Database

Problem Display
PID: 48047 (8/8/1nK5/8/k1P1P2R/2Q5/8/8 w - - 0 1)

Lider, Valentin Viktorovich

Sahovska Kompozicia, 1984

8/8/1nK5/8/k1P1P2R/2Q5/8/8

#2

5 + 2

4883 Still More Fun with Chess Miniatures 2002
136 Problem Observer 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Qb3+?
      • 1...Ka5
        • 2.Qb5#
      • 1...Kxb3!
    • 1.c5?
      • 1...Sd5
        • 2.exd5#
      • 1...Sd7
        • 2.e5#
      • 1...Sa8
        • 2.e5#
      • 1...Sc8
        • 2.e5#
      • 1...Sc4!
  • Keys
    • 1.e5!
      • 1...Sxc4
        • 2.Rxc4#
      • 1...Sd5
        • 2.cxd5#
      • 1...Sd7
        • 2.c5#
      • 1...Sa8
        • 2.c5#
      • 1...Sc8
        • 2.c5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • P(B);
      • Vars
        • S(b);OGATE::R(D)+P(C),XS(b)
        • S(b);N_GUARD::R(D)+P(C)
      • Refutation
        • S(b);
  • Actual
    • P(C);
    • Vars
      • S(b);OGATE,P_SPINS(b),XP(B)::R(D),XS(b)
      • S(b);OGATE::R(D)+P(B),XS(b)
      • S(b);N_GUARD::R(D)+P(B)
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