MESON Chess Problem Database

Problem Display
PID: 265087 (8/2Kn4/p3Q3/2pRpR1P/r2rk3/4P2q/6pb/2B1NB2 w - - 0 1)

Brabec, Juraj

Die Schwalbe, 1971

8/2Kn4/p3Q3/2pRpR1P/r2rk3/4P2q/6pb/2B1NB2

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qh4
      • 2.Bxg2#
    • 1...Rd3
      • 2.Bxd3#
    • 1...Rb4
      • 2.Bd3#
    • 1...Rc4
      • 2.Bd3#
    • 1...Bg1
      • 2.Rf4#
    • 1...Bf4
      • 2.Rxf4#
    • 1...c4
      • 2.Rxd4#
  • Tries
    • 1.Bxg2+?
      • 1...Qf3
        • 2.Bxf3#
      • 1...Qxg2!
    • 1.Rxd4+?
      • 1...cxd4
        • 2.Bd3#
      • 1...Rxd4!
    • 1.Qg6?
      • threat
        • 2.Rfxe5#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Qxf5
        • 2.Bxg2#
      • 1...Rxd5
        • 2.Rf4#
      • 1...Qxe3!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Rdxe5#
      • 1...Kxf5
        • 2.Qg6#
      • 1...Qxf5
        • 2.Rxd4#
      • 1...Rxd5
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(c);N_GUARD::B(C),XP(a)
    • R(e);N_GUARD::B(C),XR(e)
    • R(e);N_GUARD::B(C)
    • B(b);N_GUARD::R1(F)
    • B(b);N_GUARD::R1(F),XB(b)
    • P(g);N_GUARD,S_CUTR(d)::R1(E),XR(e)
  • Tries
    • Try
      • B(C);CHECK,XP(a)
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::B(C),XQ(c)
      • Refutation
        • Q(c);XB(C)
    • Try
      • R(E);CHECK,XR(e)
      • Vars
        • P(g);XR(E)::B(C)
      • Refutation
        • R(d);XR(E)
    • Try
      • Q(H);N_PINP(h)
      • Threat
        • QAB(H)+R(F),DCHECK,XP(h)
      • Vars
        • K(f);OGATEB,P_SPINP(h),S_FLIGHT,XR(E)::QAB1(H)
        • Q(c);N_GUARD,P_SPINQ(c),XR(F)::B(C),XP(a)
        • R(e);SBLOCK,XR(E)::QAB(H)+R(F),DCHECK
      • Refutation
        • Q(c);XP(D)
  • Actual
    • Q(H);N_PINP(h)
    • Threat
      • QAB(H)+R(E),DCHECK,XP(h)
    • Vars
      • K(f);OGATEB,P_SPINP(h),S_FLIGHT,XR(F)::QAB1(H)
      • Q(c);SBLOCK,XR(F)::QAB(H)+R(E),DCHECK,XR(e)
      • R(e);N_GUARD,P_SPINR(e),XR(E)::B(C)
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