MESON Chess Problem Database

Problem Display
PID: 71003 (b7/3p1N2/Q1p1n3/3k4/2R2p2/8/3K4/8 w - - 0 1)

Juricek, Stanislav

Sachove umeni (Ceskoslovensky sach), 2004

b7/3p1N2/Q1p1n3/3k4/2R2p2/8/3K4/8

#2

4 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Ra4?
      • threat
        • 2.Qc4#
      • 1...Kc5
        • 2.Qa5#
      • 1...c5
        • 2.Qd6#
        • 2.Qxa8#
      • 1...Sd4!
    • 1.Rb4?
      • threat
        • 2.Qc4#
      • 1...Kc5
        • 2.Qc4#
        • 2.Qa5#
      • 1...c5
        • 2.Qd6#
        • 2.Qxa8#
      • 1...Sd4!
  • Keys
    • 1.Re4!
      • threat
        • 2.Qc4#
      • 1...Kxe4
        • 2.Qd3#
      • 1...Kc5
        • 2.Qa5#
      • 1...Sd4
        • 2.Re5#
      • 1...c5
        • 2.Qxa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • QAB1(C)
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
      • Refutation
        • S(d);
    • Try
      • R(B);
      • Threat
        • QAB1(C)
      • Refutation
        • S(d);
  • Actual
    • R(B);
    • Threat
      • QAB1(C)
    • Vars
      • K(b);S_FLIGHT,XR(B)::QAB1(C)
      • K(b);P-FLIGHT::QAR2(C)
      • S(d);SBLOCK::R1(B)
      • P(c);OGATEB,SBLOCK::QAB(C),XB(f)
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