MESON Chess Problem Database

Problem Display
PID: 107781 (8/4Rb2/q1N2p1b/2p1p3/1NRpk3/1p2P1B1/5Q1K/8 w - - 0 1)

Brabec, Juraj

Castellari Festival (Boletim da UBP), 1963

8/4Rb2/q1N2p1b/2p1p3/1NRpk3/1p2P1B1/5Q1K/8

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Qxf4#
    • 1...Bg7
      • 2.Qf4#
    • 1...Bf8
      • 2.Qf4#
    • 1...cxb4
      • 2.Rxd4#
    • 1...f5
      • 2.Rxe5#
  • Tries
    • 1.Sxd4?
      • threat
        • 2.Qf3#
      • 1...cxd4
        • 2.Rxd4#
      • 1...Qa2
        • 2.Se6#
      • 1...Bh5
        • 2.Sb5#
      • 1...cxb4!
    • 1.Qf5+?
      • 1...Kxe3
        • 2.Qd3#
      • 1...Kxf5!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Qf3#
      • 1...fxe5
        • 2.Rxe5#
      • 1...Bf4
        • 2.Qxf4#
      • 1...Qa2
        • 2.Sxf7#
      • 1...Bh5
        • 2.Sec6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(h);N_GUARD,P_PINB(D)::QAR1(A),XB(h)
    • B(h);N_GUARD::QAR1(A)
    • P(d);N_GUARD,XS(E)::R1(F),XP(b)
    • P(g);N_GUARD::R1(H),XP(e)
  • Tries
    • Try
      • S(G);P_PINP(e),XP(b)
      • Threat
        • QAB1(A)
      • Vars
        • P(d);N_SPINP(e),OGATE,P_SPINP(d),XS(G)::R1(F),XP(d)
        • Q(f);N_GUARD,P_PINQ(A)::R(F)+S(G)
        • B(i);N_GUARD::R(F)+S(G)
      • Refutation
        • P(d);XS(E)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);N_SPINP(b),OGATE,P-FLIGHT,P_SPINP(e),XP(C)::QAR1(A)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT,XQ(A)
  • Actual
    • S(G);XP(e)
    • Threat
      • QAB1(A)
    • Vars
      • P(g);OGATE,XS(G)::R1(H),XP(g)
      • B(h);N_GUARD,P_PINB(D)::QAR1(A),XB(h)
      • Q(f);N_GUARD,P_PINQ(A)::R(H)+S(G),XB(i)
      • B(i);N_GUARD::R(H)+S(G)
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