MESON Chess Problem Database

Problem Display
PID: 79089 (4K3/B4p2/2Np4/R4P2/2P1kpQ1/2p1p2p/2Pb2bq/4NR2 w - - 0 1)

Ersek, Tibor

1st Place, League of Macedonian Problemists, 2001

4K3/B4p2/2Np4/R4P2/2P1kpQ1/2p1p2p/2Pb2bq/4NR2

#2

10 + 10

23 Die Schwalbe 2007
15174 FIDE Album (2001-2003) 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Rxf4#
      • 2.Qxf4#
    • 1...Qh1
      • 2.Rxf4#
      • 2.Qxf4#
    • 1...Bxf1
      • 2.Qf3#
    • 1...Bf3
      • 2.Qxf3#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Sg5#
      • 1...Bxf3
        • 2.Qxf3#
      • 1...f6!
    • 1.Qe2?
      • threat
        • 2.Qd3#
      • 1...Bxf1
        • 2.Qf3#
      • 1...f3!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qd4#
      • 1...d5
        • 2.Qe5#
      • 1...f6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(b);N_GUARD,XR(B)::QAB1(E)
    • B(b);N_GUARD::QAB1(E),XB(b)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • B(b);OGATE,XS(A)::QAB1(E),XB(b)
      • Refutation
        • P(j);
    • Try
      • Q(E);N_PINP(h),P_PINP(e)
      • Threat
        • QAB1(E)
      • Vars
        • B(b);N_GUARD,XR(B)::QAB1(E)
      • Refutation
        • P(h);
  • Actual
    • Q(E);N_PINP(h)
    • Threat
      • QAR1(E)
    • Vars
      • P(i);N_GUARD::QAR1(E)
      • P(j);OGATE::QAR(E)
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