MESON Chess Problem Database

Problem Display
PID: 158391 (8/8/Qp1p4/5R2/R1Pk4/8/2P2P2/3K4 w - - 0 1)

Ursic, Andrej Anton

British Chess Magazine 13. Ty., 1906-1907

8/8/Qp1p4/5R2/R1Pk4/8/2P2P2/3K4

#2

7 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qa5?
      • threat
        • 2.Rf4#
        • 2.c5#
      • 1...Ke4
        • 2.Qd5#
      • 1...b5
        • 2.cxb5#
      • 1...d5
        • 2.cxd5#
        • 2.c5#
      • 1...bxa5!
    • 1.Qxb6+?
      • 1...Kc3
        • 2.Rf3#
      • 1...Ke4!
  • Keys
    • 1.Qc8!
      • 1...Kc3
        • 2.Qh8#
      • 1...Ke4
        • 2.c5#
      • 1...b5
        • 2.cxb5#
      • 1...d5
        • 2.cxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAB1(G)
        • P(b);OGATE::R(D)+P(E),XP(b)
      • Refutation
        • P(b);XQ(G)
    • Try
      • Q(G);CHECK,XP(b)
      • Vars
        • K(a);S_FLIGHT::R(F)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(a);S_FLIGHT::QAB(G)
      • K(a);P-FLIGHT::R(D)+P(E)
      • P(b);OGATE::R(D)+P(E),XP(b)
      • P(c);OGATE::R(D)+P(E),XP(c)
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