MESON Chess Problem Database

Problem Display
PID: 38294 (2RQR3/8/5K2/3P4/8/3k4/n7/8 w - - 0 1)

Janevski, Zivko

Problem (Zagreb), 1970

2RQR3/8/5K2/3P4/8/3k4/n7/8

#2

5 + 2

2012 Miniature Chess Problems from Many Countries 1981
145 StrateGems 2008
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qa5?
      • 1...Kd4
        • 2.Qd2#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sb4!
    • 1.Qb6?
      • threat
        • 2.Qe3#
      • 1...Kd2
        • 2.Qd4#
      • 1...Sc3!
    • 1.Qe7?
      • threat
        • 2.Qe3#
      • 1...Kd2
        • 2.Qe2#
      • 1...Kd4
        • 2.Qe4#
      • 1...Sc3!
  • Keys
    • 1.Qc7!
      • 1...Kd2
        • 2.Qc2#
      • 1...Kd4
        • 2.Qc4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sb4
        • 2.Qc3#

Anticipated by 10705(1967)

This anticipates 84214(1989)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Vars
        • K(b);P-FLIGHT::QAR2(D)
        • S(a);N_GUARD::QAR1(D),XS(a)
        • S(a);N_GUARD::QAR1(D)
      • Refutation
        • S(a);
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Vars
        • K(b);P-FLIGHT::QAR2(D)
      • Refutation
        • S(a);
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Vars
        • K(b);P-FLIGHT::QAR1(D)
      • Refutation
        • S(a);
  • Actual
    • Q(D);
    • Vars
      • K(b);P-FLIGHT::QAR1(D)
      • S(a);N_GUARD::QAR1(D),XS(a)
      • S(a);N_GUARD::QAR1(D)
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