MESON Chess Problem Database

Problem Display
PID: 178208 (1Qn5/pR6/8/8/k7/2p5/8/K7 w - - 0 1)

Miloseski, Bosko

Vratnica-64, 2004

1Qn5/pR6/8/8/k7/2p5/8/K7

#2

3 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Rxa7#
      • 2.Qxa7#
    • 1...Se7
      • 2.Rxa7#
      • 2.Qxa7#
  • Tries
    • 1.Rb2?
      • threat
        • 2.Ra2#
        • 2.Qb4#
      • 1...Ka3
        • 2.Ra2#
        • 2.Qb3#
        • 2.Qb4#
      • 1...Ka5
        • 2.Ra2#
        • 2.Qb5#
      • 1...Sb6
        • 2.Qxa7#
      • 1...a5
        • 2.Ra2#
        • 2.Qb3#
      • 1...cxb2+!
    • 1.Rb3?
      • threat
        • 2.Qb4#
        • 2.Qb5#
      • 1...Ka5
        • 2.Ra3#
        • 2.Qb5#
      • 1...Sd6
        • 2.Qb4#
      • 1...a5
        • 2.Qb5#
      • 1...a6
        • 2.Qb4#
      • 1...Sb6!
    • 1.Rb4+?
      • 1...Ka5
        • 2.Qb5#
      • 1...Ka3!
    • 1.Qf4+?
      • 1...Ka3
        • 2.Qb4#
      • 1...Ka5!
  • Keys
    • 1.Rb1!
      • threat
        • 2.Qb4#
      • 1...Ka3
        • 2.Qb3#
        • 2.Qb4#
      • 1...Ka5
        • 2.Qb5#
      • 1...Sb6
        • 2.Qxa7#
      • 1...a5
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(d);N_GUARD::QAR(C),XP(c)
      • Refutation
        • P(a);CHECK,XR(B)
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(d);::QAR1(C)
        • P(c);::QAB1(C)
        • P(c);::QAR1(C)
      • Refutation
        • S(d);
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • R(B);
    • Threat
      • QAR1(C)
    • Vars
      • K(b);P-FLIGHT::QAR1(C)
      • S(d);N_GUARD::QAR(C),XP(c)
      • P(c);SBLOCK::QAB1(C)
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