MESON Chess Problem Database

Problem Display
PID: 44807 (1R2n3/B6Q/p5p1/p2rp3/2k5/P7/2P5/KN1n4 w - - 0 1)

Vatarescu, Paul

The Problemist Supplement, 2002

1R2n3/B6Q/p5p1/p2rp3/2k5/P7/2P5/KN1n4

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...a4
      • 2.Rb4#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qb3#
      • 1...Rd3
        • 2.Qxd3#
      • 1...Rb5
        • 2.Qd3#
      • 1...Rc5
        • 2.Qd3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...a4
        • 2.Rb4#
      • 1...Se3!
    • 1.Qc7+?
      • 1...Rc5
        • 2.Qxc5#
      • 1...Sxc7!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qb3#
      • 1...Rc5
        • 2.Qe4#
      • 1...Rd3
        • 2.Qc6#
      • 1...Rb5
        • 2.Qe4#
      • 1...a4
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::R1(G)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Vars
        • R(d);N_GUARD::QAB1(F),XR(d)
        • R(d);N_GUARD::QAB1(F)
        • S(a);N_GUARD::QAR1(F),XS(a)
        • P(c);N_GUARD::R1(G)
      • Refutation
        • S(a);
    • Try
      • Q(F);CHECK
      • Vars
        • R(d);N_GUARD,P_SPINR(d)::QAR1(F),XR(d)
      • Refutation
        • S(h);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • R(d);OGATE::QAR2(F)
      • R(d);N_GUARD::QAR2(F)
      • P(c);N_GUARD::QAR1(F)
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