MESON Chess Problem Database

Problem Display
PID: 72456 (b7/8/4p3/2Rn4/1RNQpkBK/q2p4/r5p1/b7 w - - 0 1)

Gockel, Hubert

Comm., Die Schwalbe, 2007

b7/8/4p3/2Rn4/1RNQpkBK/q2p4/r5p1/b7

#2

6 + 10

23 Die Schwalbe 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Qe5#
    • 1...Rf2
      • 2.Qxf2#
    • 1...Bb2
      • 2.Qf2#
    • 1...Sc3
      • 2.Qe3#
      • 2.Qe5#
      • 2.Qf6#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sxb4
      • 2.Qe3#
    • 1...Sb6
      • 2.Qe3#
    • 1...Sf6
      • 2.Qe3#
    • 1...Sc7
      • 2.Qe3#
    • 1...Se7
      • 2.Qe3#
  • Tries
    • 1.Rb2?
      • threat
        • 2.Qf2#
        • 2.Qe5#
      • 1...Qxc5
        • 2.Qe5#
      • 1...Rxb2
        • 2.Qe5#
      • 1...Bxb2
        • 2.Qf2#
      • 1...g1Q
        • 2.Qe5#
      • 1...g1S
        • 2.Qe5#
      • 1...g1B
        • 2.Qe5#
      • 1...Qc3
        • 2.Qf2#
      • 1...Se3
        • 2.Qxe3#
        • 2.Qe5#
      • 1...d2
        • 2.Qe5#
      • 1...e5
        • 2.Qf2#
        • 2.Qxe5#
      • 1...Qxb2!
  • Keys
    • 1.Sb2!
      • threat
        • 2.Qxe4#
      • 1...Qxb4
        • 2.Sxd3#
      • 1...Sxb4
        • 2.Qf2#
      • 1...Sc3
        • 2.Sxd3#
        • 2.Qf2#
      • 1...Se3
        • 2.Qe5#
      • 1...Sb6
        • 2.Qf2#
      • 1...Sf6
        • 2.Qf2#
      • 1...Sc7
        • 2.Qf2#
      • 1...Se7
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(b);S_CUTB(a)::QAB1(C)
    • R(b);N_GUARD::QAR2(C),XR(b)
    • B(a);S_CUTR(b)::QAR2(C)
    • S(h);N_GUARD::QAB1(C),XS(h)
    • S(h);N_GUARD,XR(A)::QAB1(C)
    • S(h);N_GUARD::QAB1(C)
  • Tries
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(d);XR(F)::QAB1(C)
        • R(b);XR(A)::QAB1(C)
        • B(a);XR(A)::QAR2(C)
        • P(c);::QAB1(C)
        • Q(d);::QAR2(C)
        • P(e);::QAB1(C)
      • Refutation
        • Q(d);XR(A)
  • Actual
    • S(B);
    • Threat
      • QAR1(C),XP(f)
    • Vars
      • Q(d);N_GUARD,XR(A)::S(B),XP(e)
      • S(h);XR(A)::QAR2(C)
      • S(h);SBLOCK::QAB1(C)
      • S(h);::QAR2(C)
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