MESON Chess Problem Database

Problem Display
PID: 102345 (3r2Qr/qb3RB1/4N3/1P1kP1N1/p7/4p3/4B2p/1R2n2K w - - 0 1)

Zidek, Alexander

3rd HM., Schach-Aktiv, 1994

3r2Qr/qb3RB1/4N3/1P1kP1N1/p7/4p3/4B2p/1R2n2K

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd7
      • 2.Rxd7#
    • 1...Ra8
      • 2.Rd7#
    • 1...Rb8
      • 2.Rd7#
    • 1...Rc8
      • 2.Rd7#
    • 1...Re8
      • 2.Rd7#
    • 1...Rf8
      • 2.Rd7#
    • 1...Rdxg8
      • 2.Rd7#
    • 1...Rh3
      • 2.Qxd8#
    • 1...Rh4
      • 2.Qxd8#
    • 1...Rh5
      • 2.Qxd8#
    • 1...Rh6
      • 2.Qxd8#
    • 1...Rh7
      • 2.Qxd8#
  • Tries
    • 1.Rc1?
      • threat
        • 2.Bc4#
      • 1...Qd4
        • 2.Sc7#
      • 1...Qc5
        • 2.Rxc5#
      • 1...Rc8
        • 2.Rd7#
      • 1...Rh4
        • 2.Qxd8#
      • 1...Sd3
        • 2.Bf3#
      • 1...Sc2!
    • 1.Rd1+?
      • 1...Qd4
        • 2.Rxd4#
      • 1...Sd3!
    • 1.Rf4?
      • threat
        • 2.Bc4#
      • 1...Qd4
        • 2.Rxd4#
      • 1...Qc5
        • 2.Sc7#
      • 1...Sd3
        • 2.Bf3#
      • 1...Rc8!
    • 1.Rc7?
      • threat
        • 2.Bc4#
      • 1...Qd4
        • 2.Sf4#
      • 1...Qc5
        • 2.Rxc5#
      • 1...Rh4
        • 2.Qxd8#
      • 1...Sd3
        • 2.Bf3#
      • 1...Bc6!
  • Keys
    • 1.Rb4!
      • threat
        • 2.Bc4#
      • 1...Qd4
        • 2.Rxd4#
      • 1...Qc5
        • 2.Sf4#
      • 1...Rc8
        • 2.Rd7#
      • 1...Rh4
        • 2.Qxd8#
      • 1...Sd3
        • 2.Bf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • R(h);N_GUARD::R(H),XR(h)
    • R(h);N_GUARD::R(H)
    • R(h);N_GUARD,XQ(J)::R(H)
    • R(i);N_GUARD::QAR(J),XR(h)
  • Tries
    • Try
      • R(A);
      • Threat
        • B(C)
      • Vars
        • Q(f);SBLOCK::S(G)
        • Q(f);N_GUARD::R1(A),XQ(f)
        • R(h);N_GUARD::R(H)
        • R(i);N_GUARD::QAR(J),XR(h)
        • S(a);N_GUARD::B(C)
      • Refutation
        • S(a);
    • Try
      • R(A);CHECK
      • Vars
        • Q(f);N_GUARD,P_SPINQ(f)::R1(A),XQ(f)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • R(H);
      • Threat
        • B(C)
      • Vars
        • Q(f);N_GUARD::R1(H),XQ(f)
        • Q(f);SBLOCK::QAB(J)+S(G),DCHECK
        • S(a);N_GUARD::B(C)
      • Refutation
        • R(h);
    • Try
      • R(H);
      • Threat
        • B(C)
      • Vars
        • Q(f);SBLOCK::QAB(J)+S(G),DCHECK
        • Q(f);N_GUARD::R1(H),XQ(f)
        • R(i);N_GUARD::QAR(J),XR(h)
        • S(a);N_GUARD::B(C)
      • Refutation
        • B(g);
  • Actual
    • R(A);
    • Threat
      • B(C)
    • Vars
      • Q(f);N_GUARD::R1(A),XQ(f)
      • Q(f);SBLOCK::S(G)
      • R(h);N_GUARD::R(H)
      • R(i);N_GUARD::QAR(J),XR(h)
      • S(a);N_GUARD::B(C)
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