MESON Chess Problem Database

Problem Display
PID: 37728 (4n2K/r4p2/bnp2RNp/3kp1p1/6R1/Q2pB3/1p2N3/2q5 w - - 0 1)

Schonholzer, Andreas

2nd HM., Probleemblad, 1975

4n2K/r4p2/bnp2RNp/3kp1p1/6R1/Q2pB3/1p2N3/2q5

#2

7 + 13

3690 Kunstschach in der Schweiz 1980

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Qc5#
    • 1...Qxe3
      • 2.Sc3#
    • 1...Qa1
      • 2.Sc3#
      • 2.Qc5#
    • 1...Qb1
      • 2.Sc3#
      • 2.Qc5#
    • 1...Qd1
      • 2.Sc3#
      • 2.Qc5#
    • 1...Qe1
      • 2.Qc5#
    • 1...Qf1
      • 2.Sc3#
      • 2.Qc5#
    • 1...Qg1
      • 2.Sc3#
      • 2.Qc5#
    • 1...Qh1
      • 2.Sc3#
      • 2.Qc5#
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qc5
      • 2.Qxc5#
    • 1...Re7
      • 2.Sxe7#
    • 1...Ra8
      • 2.Se7#
    • 1...Bc4
      • 2.Qc5#
    • 1...Bb7
      • 2.Se7#
      • 2.Qxd3#
    • 1...Bc8
      • 2.Qxd3#
    • 1...Sc4
      • 2.Qc5#
      • 2.Qxd3#
    • 1...Sd7
      • 2.Se7#
    • 1...Sd6
      • 2.Rxd6#
      • 2.Qxd6#
    • 1...Sc7
      • 2.Se7#
      • 2.Rd6#
      • 2.Qd6#
    • 1...Sg7
      • 2.Rd6#
      • 2.Qd6#
  • Tries
    • 1.Qb3+?
      • 1...Qc4
        • 2.Sc3#
      • 1...Sc4
        • 2.Qxd3#
      • 1...Bc4!
    • 1.Qc3?
      • threat
        • 2.Qxe5#
      • 1...Qxe3
        • 2.Qxc6#
      • 1...Qxc3
        • 2.Sxc3#
      • 1...Re7
        • 2.Sxe7#
      • 1...Sc4
        • 2.Qxd3#
      • 1...Sd7
        • 2.Se7#
      • 1...e4
        • 2.Qd4#
      • 1...fxg6!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxe5#
      • 1...Qxe3
        • 2.Sc3#
      • 1...Rxe7
        • 2.Sxe7#
      • 1...fxg6
        • 2.Qe6#
      • 1...e4
        • 2.Qxe4#
      • 1...Qc3
        • 2.Sxc3#
      • 1...Sc4
        • 2.Qc5#
      • 1...Sd7
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(a);N_GUARD::QAR1(B)
    • Q(a);N_GUARD,XB(C)::S(A)
    • Q(a);N_GUARD::S(A),XQ(a)
    • Q(a);N_GUARD::QAR1(B),XQ(a)
    • R(k);N_GUARD::S(F),XR(k)
    • R(k);N_GUARD::S(F)
    • B(g);S_CUTQ(a)::QAR1(B)
    • B(g);N_GUARD::QAR2(B),XP(c)
    • S(h);S_CUTR(k)::S(F)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • Q(a);P_SPINQ(a)::S(A)
        • S(h);P_SPINS(h),S_CUTB(g)::QAR2(B),XP(c)
      • Refutation
        • B(g);P_SPINB(g)
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XP(e)
      • Vars
        • Q(a);N_GUARD,XB(C)::QAB1(B),XP(i)
        • Q(a);XQ(B)::S(A),XQ(a)
        • R(k);N_GUARD::S(F),XR(k)
        • S(h);S_CUTB(g)::QAR2(B),XP(c)
        • S(h);S_CUTR(k)::S(F)
        • P(e);N_GUARD::QAR1(B)
      • Refutation
        • P(l);XS(F)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XP(e)
    • Vars
      • Q(a);N_GUARD,XB(C)::S(A)
      • R(k);XQ(B)::S(F),XR(k)
      • P(l);N_GUARD,XS(F)::QAB1(B)
      • P(e);OGATE::QAB1(B),XP(e)
      • Q(a);N_GUARD::S(A),XQ(a)
      • S(h);S_CUTQ(a)::QAR1(B)
      • S(h);S_CUTR(k)::QAB(B),XP(l)
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