MESON Chess Problem Database

Problem Display
PID: 104519 (8/BKn3Q1/4p3/R1Pk2NR/5p2/1P2p3/n2r2qp/3N3B w - - 0 1)

Nesic, Milivoj S

Mezija, 1994

8/BKn3Q1/4p3/R1Pk2NR/5p2/1P2p3/n2r2qp/3N3B

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Bxf3#
    • 1...Qe4
      • 2.Bxe4#
    • 1...Sc1
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sb4
      • 2.Sc3#
    • 1...f3
      • 2.Sxe3#
    • 1...e5
      • 2.Qd7#
  • Tries
    • 1.Kxc7?
      • threat
        • 2.c6#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Rc2!
    • 1.Sh3+?
      • 1...e5
        • 2.Qxe5#
      • 1...Ke4!
    • 1.Se4+?
      • 1...Qg5
        • 2.Sec3#
      • 1...e5
        • 2.Qxe5#
      • 1...Kxe4!
    • 1.Sf7+?
      • 1...e5
        • 2.Qxe5#
      • 1...Ke4!
    • 1.Sh7+?
      • 1...e5
        • 2.Qxe5#
      • 1...Ke4!
    • 1.Bxg2+?
      • 1...f3
        • 2.Sxe3#
        • 2.Bxf3#
      • 1...Rxg2!
    • 1.Qxc7?
      • threat
        • 2.Qd6#
        • 2.c6#
      • 1...Rc2
        • 2.Qd6#
      • 1...Sc3
        • 2.Qd6#
      • 1...Kd4+!
    • 1.c6+?
      • 1...Kd6
        • 2.Qf8#
        • 2.Qxc7#
        • 2.Qd7#
      • 1...Sb5!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Sxe6#
      • 1...Kd4+
        • 2.c6#
      • 1...Ke5+
        • 2.Sf3#
      • 1...f3
        • 2.Qe4#
      • 1...e5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(c);OGATE::B(B),XQ(c)
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • P(f);N_GUARD,N_SPINQ(c)::S(A),XP(e)
    • P(h);SBLOCK::QAR2(J)
  • Tries
    • Try
      • K(I);P-FLIGHT,XS(i)
      • Threat
        • R(D)+P(E)
      • Vars
        • S(a);N_GUARD::S(A),XS(a)
      • Refutation
        • R(b);P_PINP(E)
    • Try
      • S(F);CHECK
      • Vars
        • P(h);P_SPINP(h)::QAR1(J),XP(h)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • S(F);CHECK,N_PINQ(c)
      • Vars
        • Q(c);P_SPINQ(c)::B(B)+S(F),DCHECK
        • P(h);P_SPINP(h)::QAR1(J),XP(h)
      • Refutation
        • K(g);P_SPINQ(c),S_FLIGHT,XS(F)
    • Try
      • S(F);CHECK
      • Vars
        • P(h);P_SPINP(h)::QAR1(J),XP(h)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • P(h);P_SPINP(h)::QAR1(J),XP(h)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • B(B);CHECK,XQ(c)
      • Refutation
        • R(b);XB(B)
    • Try
      • Q(J);XS(i)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAR1(J)
        • S(a);::QAR1(J)
      • Refutation
        • K(g);CHECK,N_SPINQ(c),P-FLIGHT
    • Try
      • P(E);CHECK
      • Refutation
        • S(i);P_SPINS(i)
  • Actual
    • Q(J);
    • Threat
      • R(G)+S(F),XP(h)
    • Vars
      • K(g);CHECK,N_SPINQ(c),P-FLIGHT::B(H)+P(E)
      • K(g);CHECK,N_SPINQ(c),P-FLIGHT::R(G)+S(F),DCHECK
      • P(f);N_SPINQ(c),S_CUTQ(c)::QAB1(J)
      • P(h);OGATE::QAR1(J)
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