MESON Chess Problem Database

Problem Display
PID: 183564 (K2Nb3/1Qp3PB/np2p3/4k1B1/1p6/2P5/1Nn1qp2/3R4 w - - 0 1)

Jankevics, Karlis

Sachova skladba, 2009

K2Nb3/1Qp3PB/np2p3/4k1B1/1p6/2P5/1Nn1qp2/3R4

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd1
      • 2.Sc4#
    • 1...Qf1
      • 2.Qe4#
    • 1...Qf3
      • 2.Sc4#
    • 1...Qc4
      • 2.Sxc4#
    • 1...Qb5
      • 2.Qe4#
    • 1...Qh5
      • 2.Sc4#
      • 2.Qe4#
    • 1...Qe1
      • 2.Sc4#
    • 1...Qd2
      • 2.Sc4#
    • 1...Qe3
      • 2.Sc4#
    • 1...Qe4
      • 2.Qxe4#
    • 1...Ba4
      • 2.Sf7#
    • 1...Bb5
      • 2.Sf7#
    • 1...Bh5
      • 2.Sc6#
    • 1...Bc6
      • 2.Sxc6#
      • 2.Sf7#
    • 1...Bd7
      • 2.Sf7#
    • 1...Bf7
      • 2.Sc6#
      • 2.Sxf7#
    • 1...Se3
      • 2.Qe4#
    • 1...Sc5
      • 2.Qxc7#
    • 1...Sb8
      • 2.Qxc7#
  • Tries
    • 1.Rd7?
      • threat
        • 2.Sc6#
      • 1...Bxd7
        • 2.Sf7#
      • 1...Qf3
        • 2.Sc4#
      • 1...Qc4
        • 2.Sxc4#
      • 1...Qb5
        • 2.Qe4#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Sd4
        • 2.cxd4#
      • 1...Sb8
        • 2.Qxc7#
      • 1...c6
        • 2.Sxc6#
      • 1...Bg6!
    • 1.g8Q?
      • threat
        • 2.Qxe6#
        • 2.Qg7#
        • 2.Qh8#
      • 1...Qxd1
        • 2.Sc4#
        • 2.Qxe6#
      • 1...Qd3
        • 2.Qxe6#
      • 1...Qd2
        • 2.Sc4#
        • 2.Qxe6#
      • 1...Bg6
        • 2.Qxe6#
      • 1...f1Q
        • 2.Qxe6#
      • 1...f1R
        • 2.Qxe6#
      • 1...Qf3
        • 2.Sc4#
        • 2.Qxe6#
      • 1...Qc4
        • 2.Sxc4#
        • 2.Qg7#
        • 2.Qh8#
      • 1...Qg4
        • 2.Qg7#
        • 2.Qh8#
      • 1...Bd7
        • 2.Sf7#
        • 2.Qg7#
        • 2.Qh8#
      • 1...Bf7
        • 2.Sc6#
        • 2.Sxf7#
        • 2.Qg7#
        • 2.Qh8#
      • 1...Sc5
        • 2.Qxc7#
        • 2.Qg7#
        • 2.Qh8#
      • 1...Sd4!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qxe6#
      • 1...Bxc6+
        • 2.Sxc6#
      • 1...Qf3
        • 2.Sc4#
      • 1...Qc4
        • 2.Sxc4#
      • 1...Qg4
        • 2.Sd3#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Bd7
        • 2.Sf7#
      • 1...Bf7
        • 2.Sxf7#
      • 1...Sd4
        • 2.cxd4#
      • 1...Sc5
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 11
  • Sets
    • Q(b);N_GUARD,XR(A)::S(B)
    • Q(b);N_GUARD::QAR1(E)
    • Q(b);N_GUARD,P_PINQ(E)::S(B)
    • Q(b);N_GUARD::S(B),XQ(b)
    • Q(b);N_GUARD::S(B)
    • Q(b);N_GUARD,P_PINQ(E)::QAR1(E),XQ(b)
    • B(j);N_GUARD::S(I)
    • S(a);S_CUTQ(b)::QAR1(E)
    • S(f);N_GUARD::QAB(E),XP(i)
  • Tries
    • Try
      • R(A);
      • Threat
        • S(I)
      • Vars
        • B(j);N_GUARD,XR(A)::S(I)
        • Q(b);N_GUARD,P_PINQ(E)::S(B)
        • Q(b);N_GUARD::S(B),XQ(b)
        • Q(b);N_GUARD::QAR1(E)
        • Q(b);N_GUARD,P_PINQ(E)::QAR1(E),XQ(b)
        • S(a);OGATE::P(C),XS(a)
        • S(f);N_GUARD::QAB(E),XP(i)
        • P(i);::S(I),XP(i)
      • Refutation
        • B(j);
    • Try
      • P(F);
      • Threat
        • DUALS(3)
      • Vars
        • Q(b);::QAR1(F),XP(h)
        • B(j);::QAR1(F),XP(h)
        • P(c);::QAR1(F),XP(h)
      • Refutation
        • S(a);
  • Actual
    • Q(E);
    • Threat
      • QAR1(E),XP(h)
    • Vars
      • B(j);CHECK,XQ(E)::S(I),XB(j)
      • Q(b);N_GUARD,P_PINQ(E)::S(B)
      • Q(b);N_GUARD::S(B),XQ(b)
      • Q(b);N_GUARD::S(B)
      • Q(b);N_GUARD,P_PINQ(E)::QAR1(E),XQ(b)
      • B(j);N_GUARD::S(I)
      • B(j);N_GUARD::S(I),XB(j)
      • S(a);OGATE::P(C),XS(a)
      • S(f);N_GUARD::QAB(E),XP(i)
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