MESON Chess Problem Database

Problem Display
PID: 175911 (3qr2b/Q2p4/8/1P1N2p1/2B1kPK1/5N2/1r3Bn1/1b6 w - - 0 1)

Jankevics, Karlis

Sachova skladba, 2012

3qr2b/Q2p4/8/1P1N2p1/2B1kPK1/5N2/1r3Bn1/1b6

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Sxg5#
    • 1...Qb6
      • 2.Sxg5#
    • 1...Qc7
      • 2.Sxg5#
    • 1...Qa8
      • 2.Sxg5#
    • 1...Qb8
      • 2.Sxg5#
    • 1...Qc8
      • 2.Sxg5#
    • 1...Rd2
      • 2.Sxd2#
    • 1...Rb3
      • 2.Sd2#
    • 1...Rb4
      • 2.Sd2#
    • 1...Rxb5
      • 2.Sd2#
    • 1...Re5
      • 2.Sc3#
      • 2.Qd4#
    • 1...Re7
      • 2.Sxg5#
    • 1...Bc2
      • 2.Sd2#
    • 1...Bc3
      • 2.Sxc3#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Se1
      • 2.Qe3#
    • 1...Se3+
      • 2.Qxe3#
    • 1...Sxf4
      • 2.Qe3#
    • 1...Sh4
      • 2.Qe3#
    • 1...d6
      • 2.Qh7#
  • Tries
    • 1.Se5?
      • threat
        • 2.Sc3#
        • 2.Qd4#
      • 1...Se3+
        • 2.Qxe3#
      • 1...Rxf2
        • 2.Sc3#
      • 1...Sxf4
        • 2.Qe3#
        • 2.Qd4#
      • 1...gxf4
        • 2.Qd4#
      • 1...Qa5
        • 2.Qd4#
      • 1...Qb6
        • 2.Sc3#
      • 1...Rc2
        • 2.Qd4#
      • 1...Rd2
        • 2.Sc3#
      • 1...Rb3
        • 2.Qd4#
      • 1...Bxe5!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Bd5#
      • 1...Se3+
        • 2.Qxe3#
      • 1...Rxb4
        • 2.Sd2#
      • 1...Sxf4
        • 2.Qe3#
      • 1...Qa8
        • 2.Sxg5#
      • 1...Rd2
        • 2.Sxd2#
      • 1...Re5
        • 2.Qd4#
      • 1...Ba2
        • 2.Bd3#
      • 1...d5
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 14
  • Sets
    • Q(g);N_GUARD::S(B),XP(e)
    • R(b);N_GUARD::S(B),XR(b)
    • R(b);N_GUARD::S(B)
    • R(b);N_GUARD,XP(F)::S(B)
    • R(h);S_CUTQ(g)::S(B),XP(e)
    • B(a);S_CUTR(b)::S(B)
    • B(i);N_GUARD::S(G),XB(i)
    • B(i);N_GUARD::QAR1(H),XB(i)
    • S(c);N_GUARD::QAR1(H)
    • S(c);CHECK,N_GUARD::QAR1(H),XS(c)
    • S(c);N_GUARD,XP(D)::QAR1(H)
    • P(f);OGATE::QAB(H)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);CHECK,N_GUARD::QAR1(H),XS(c)
        • R(b);XB(A)::S(G)
        • P(e);XP(D)::QAR1(H)
        • Q(g);::QAR1(H)
        • Q(g);::S(G)
        • R(b);::QAR1(H)
        • R(b);::S(G)
      • Refutation
        • B(i);XS(B)
  • Actual
    • S(G);
    • Threat
      • B(C)
    • Vars
      • S(c);CHECK,N_GUARD::QAR1(H),XS(c)
      • R(b);N_GUARD,XS(G)::S(B)
      • S(c);N_GUARD,XP(D)::QAR1(H)
      • Q(g);N_GUARD::S(B),XP(e)
      • R(b);N_GUARD::S(B),XR(b)
      • R(h);S_CUTB(i)::QAR1(H)
      • B(a);N_GUARD::B(C)
      • P(f);OGATE::QAB(H)
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