MESON Chess Problem Database

Problem Display
PID: 287183 (b2N4/6b1/3p3r/3kn2R/1Kpn1P2/1p2pppQ/8/1BrR4 w - - 0 1)

Zajic, Helmut

Problem-Forum, 2008

b2N4/6b1/3p3r/3kn2R/1Kpn1P2/1p2pppQ/8/1BrR4

#2

7 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh5
      • 2.Qe6#
    • 1...Re6
      • 2.Qxe6#
    • 1...Rh7
      • 2.Qe6#
    • 1...Rh8
      • 2.Qe6#
    • 1...Bf6
      • 2.Qe6#
    • 1...f2
      • 2.Qg2#
    • 1...g2
      • 2.Qxf3#
  • Tries
    • 1.Qf1?
      • threat
        • 2.Qxf3#
      • 1...Rxd1
        • 2.Qxc4#
      • 1...f2
        • 2.Qg2#
      • 1...Rxh5!
    • 1.Qg4?
      • threat
        • 2.Qxf3#
      • 1...Rxh5
        • 2.Qe6#
      • 1...f2
        • 2.Qf3#
      • 1...Rxd1!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qxa8#
      • 1...Rxd1
        • 2.Qxc4#
      • 1...Rxh5
        • 2.Qe6#
      • 1...Bc6
        • 2.Qxc6#
      • 1...Bb7
        • 2.Qxb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(k);N_GUARD,XR(F)::QAB1(C)
    • R(k);N_GUARD::QAB1(C),XR(k)
    • R(k);N_GUARD::QAB1(C)
    • B(l);S_CUTR(k)::QAB1(C)
    • P(d);OGATEB::QAB(C)
    • P(e);OGATE::QAB(C),XP(d)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAB(C),XP(d)
      • Vars
        • R(a);N_GUARD,N_SPINS(g),P_SPINS(i),XR(B)::QAB1(C),XP(f)
        • P(d);OGATEB::QAB(C)
      • Refutation
        • R(k);XR(F)
    • Try
      • Q(C);
      • Threat
        • QAB(C),XP(d)
      • Vars
        • R(k);N_GUARD,XR(F)::QAB1(C)
        • P(d);::QAB(C)
      • Refutation
        • R(a);N_SPINS(g),P_SPINS(i),XR(B)
  • Actual
    • Q(C);
    • Threat
      • QAB(C),XB(m)
    • Vars
      • R(a);N_GUARD,N_SPINS(g),P_SPINS(i),XR(B)::QAB1(C),XP(f)
      • R(k);N_GUARD,XR(F)::QAB1(C)
      • B(m);N_GUARD::QAB1(C),XB(m)
      • B(m);N_GUARD::QAB(C),XB(m)
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