MESON Chess Problem Database

Problem Display
PID: 81023 (6n1/BKQ1p3/8/3P1PpB/4k3/1p1rNr2/2P1N3/4R3 w - - 0 1)

Brabec, Juraj

2nd Prize, Smer, 1964

6n1/BKQ1p3/8/3P1PpB/4k3/1p1rNr2/2P1N3/4R3

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Sc3#
    • 1...Rd2
      • 2.Sc3#
    • 1...Rc3
      • 2.Sxc3#
    • 1...Rd4
      • 2.Sc3#
    • 1...Rxd5
      • 2.Sc3#
    • 1...Rf1
      • 2.Sg3#
    • 1...Rf2
      • 2.Sg3#
    • 1...Rg3
      • 2.Sxg3#
    • 1...Rf4
      • 2.Sg3#
    • 1...Rxf5
      • 2.Sg3#
    • 1...Sf6
      • 2.Qxe7#
    • 1...Sh6
      • 2.Qxe7#
  • Tries
    • 1.Bd4?
      • threat
        • 2.Qe5#
      • 1...Rxd4
        • 2.Sc3#
      • 1...e5
        • 2.Qxe5#
      • 1...Rxf5!
    • 1.Qc4+?
      • 1...Rd4
        • 2.Qxd4#
      • 1...Ke5!
    • 1.Qd7?
      • threat
        • 2.Qe6#
      • 1...Ke5
        • 2.Qe6#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Rxf5
        • 2.Qxf5#
      • 1...e6
        • 2.Qxe6#
      • 1...e5!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qe5#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Kxf5
        • 2.Qe5#
      • 1...Rxd5
        • 2.Sg3#
      • 1...Rxf5
        • 2.Sc3#
      • 1...e5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • R(b);N_GUARD::S(C)
    • R(b);N_GUARD::S(C),XR(b)
    • R(b);N_GUARD,XP(E)::S(C)
    • R(c);N_GUARD::S(C)
    • R(c);N_GUARD::S(C),XR(c)
    • R(c);N_GUARD,XP(F)::S(C)
    • S(g);N_GUARD::QAR(J),XP(f)
  • Tries
    • Try
      • B(H);
      • Threat
        • QAR1(J)
      • Vars
        • R(b);N_GUARD,SBLOCK,XB(H)::S(C)
        • P(f);::QAR1(J),XP(f)
      • Refutation
        • R(c);XP(F)
    • Try
      • Q(J);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAR1(J),XR(b)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(J);
      • Threat
        • QAR2(J)
      • Vars
        • K(d);P-FLIGHT::QAR1(J)
        • R(b);OGATE,XP(E)::QAB1(J),XR(b)
        • R(c);OGATE,XP(F)::QAB1(J),XR(c)
        • P(f);::QAR2(J),XP(f)
      • Refutation
        • P(f);
  • Actual
    • S(D);
    • Threat
      • QAR1(J)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XP(E)::QAB1(J)
      • K(d);S_FLIGHT,XP(F)::QAR1(J)
      • R(b);SBLOCK,XP(E)::R(A)+S(C),DCHECK
      • R(c);SBLOCK,XP(F)::R(A)+S(C),DCHECK
      • P(f);::QAR1(J),XP(f)
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