MESON Chess Problem Database

Problem Display
PID: 22538 (3nR2B/4r2p/1N6/3n1b1R/3pk3/K2p4/6N1/2QB2b1 w - - 0 1)

Bakcsi, Gyorgy

1st Prize, Rjazansky komsomolets, 1982-1994

3nR2B/4r2p/1N6/3n1b1R/3pk3/K2p4/6N1/2QB2b1

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rxe5#
    • 1...Be6
      • 2.Re5#
    • 1...Sc3
      • 2.Qf4#
    • 1...Sb4
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sf6
      • 2.Qf4#
    • 1...Sc7
      • 2.Qf4#
  • Tries
    • 1.Rh4+?
      • 1...Sf4
        • 2.Rxf4#
        • 2.Qxf4#
      • 1...Bg4!
    • 1.Rxe7+?
      • 1...Be6
        • 2.Re5#
      • 1...Sxe7
        • 2.Qf4#
      • 1...Se6!
    • 1.Qc5?
      • threat
        • 2.Qxd5#
      • 1...Sxb6
        • 2.Qxf5#
      • 1...Be6
        • 2.Re5#
      • 1...Sc3
        • 2.Qxf5#
      • 1...Se3
        • 2.Qxd4#
      • 1...Sb4
        • 2.Qxf5#
      • 1...Sf4
        • 2.Qxf5#
      • 1...Sf6
        • 2.Qxf5#
      • 1...Sc7
        • 2.Qxf5#
      • 1...d2!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qxf5#
      • 1...Bh3
        • 2.Qxd5#
      • 1...Bg4
        • 2.Qxd5#
      • 1...Be6
        • 2.Qe5#
      • 1...Bg6
        • 2.Qxd5#
      • 1...Bd7
        • 2.Qxd5#
      • 1...Bc8
        • 2.Qxd5#
      • 1...Se3
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • R(g);OGATE::R1(G),XR(g)
    • B(f);N_SPINR(g),OGATE::R1(E)
    • S(e);N_GUARD::QAR1(A)
    • S(e);N_GUARD::QAR1(A),XS(e)
  • Tries
    • Try
      • R(E);CHECK
      • Refutation
        • B(f);P_SPINB(f)
    • Try
      • R(G);CHECK,XR(g)
      • Vars
        • B(f);OGATE,P_SPINB(f)::R1(E)
        • S(e);XR(G)::QAR1(A)
      • Refutation
        • S(i);P_SPINS(i)
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XS(e)
      • Vars
        • S(e);OGATE,XS(F)::QAB1(A),XB(f)
        • B(f);N_SPINR(g),OGATE::R1(E)
        • S(e);OGATE::QAB1(A),XB(f)
        • S(e);S_CUTB(a)::QAR1(A),XP(c)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XB(f)
    • Vars
      • B(f);OGATE::QAB1(A),XS(e)
      • B(f);N_SPINR(g),OGATE::QAR1(A)
      • S(e);N_GUARD::QAR1(A)
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