MESON Chess Problem Database

Problem Display
PID: 102346 (4RB2/1NNK2pq/B2p2p1/2pP3p/3k4/6Q1/8/2rr2bb w - - 0 1)

Zidek, Alexander

Schach-Aktiv, 1995

4RB2/1NNK2pq/B2p2p1/2pP3p/3k4/6Q1/8/2rr2bb

#2

8 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Qd3#
    • 1...Rf1
      • 2.Qd3#
    • 1...Rd3
      • 2.Qxd3#
    • 1...Bh2
      • 2.Qe3#
    • 1...Be3
      • 2.Qxe3#
  • Tries
    • 1.Kxd6?
      • threat
        • 2.Qe5#
      • 1...Rc4
        • 2.Sb5#
      • 1...Re1
        • 2.Qd3#
      • 1...Be4
        • 2.Se6#
      • 1...c4
        • 2.Sb5#
      • 1...Bh2!
    • 1.Bxd6?
      • threat
        • 2.Qe5#
      • 1...Re1
        • 2.Qd3#
      • 1...Bh2
        • 2.Qe3#
      • 1...Be4
        • 2.Be5#
      • 1...c4
        • 2.Bc5#
      • 1...Rc4!
  • Keys
    • 1.Sxd6!
      • threat
        • 2.Qe5#
      • 1...c4
        • 2.Sdb5#
      • 1...Rc4
        • 2.Sdb5#
      • 1...Re1
        • 2.Qd3#
      • 1...Bh2
        • 2.Qe3#
      • 1...Be4
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::QAR1(A)
    • R(b);N_GUARD::QAR1(A),XR(b)
    • B(c);N_GUARD::QAB1(A)
    • B(c);N_GUARD::QAB1(A),XB(c)
  • Tries
    • Try
      • K(F);P-FLIGHT,XP(h)
      • Threat
        • QAB1(A)
      • Vars
        • R(a);SBLOCK::S(E)
        • R(b);N_GUARD::QAR1(A)
        • B(d);SBLOCK::S(E)
        • P(f);SBLOCK::S(E)
      • Refutation
        • B(c);P_PINQ(A)
    • Try
      • B(H);XP(h)
      • Threat
        • QAB1(A)
      • Vars
        • R(b);N_GUARD::QAR1(A)
        • B(c);N_GUARD::QAB1(A)
        • B(d);SBLOCK::B(H)
        • P(f);S_CUTR(a)::B(H)
      • Refutation
        • R(a);
  • Actual
    • S(D);XP(h)
    • Threat
      • QAB1(A)
    • Vars
      • P(f);SBLOCK::S(D)
      • R(a);SBLOCK::S(D)
      • R(b);N_GUARD::QAR1(A)
      • B(c);N_GUARD::QAB1(A)
      • B(d);N_GUARD::R1(G),XB(d)
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