MESON Chess Problem Database

Problem Display
PID: 138542 (3RBN2/B7/rr2p2P/p1Pn4/R1nk2NQ/1p2pP2/1PP5/3b2K1 w - - 0 1)

Nesic, Milivoj S

Vecherni Leningrad, 1986

3RBN2/B7/rr2p2P/p1Pn4/R1nk2NQ/1p2pP2/1PP5/3b2K1

#2

13 + 10

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Sxe6#
    • 1...e2
      • 2.Qf2#
  • Tries
    • 1.Sf2+?
      • 1...Kxc5
        • 2.Sd3#
        • 2.Sxe6#
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Ke5!
    • 1.Sh2+?
      • 1...Kxc5
        • 2.Sxe6#
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Ke5!
    • 1.Sxe3+?
      • 1...Kxc5
        • 2.Sxe6#
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Ke5
        • 2.Sg6#
        • 2.Sd7#
      • 1...Kxe3!
    • 1.Se5+?
      • 1...Kxc5
        • 2.Sd3#
        • 2.Sxe6#
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Kxe5!
    • 1.Sf6+?
      • 1...Kxc5
        • 2.Sxe6#
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Ke5!
    • 1.Qe1?
      • threat
        • 2.Qxe3#
      • 1...Kxc5
        • 2.Sxe6#
      • 1...Rb4
        • 2.Qc3#
      • 1...Rd6
        • 2.Qxd1#
      • 1...e2
        • 2.Qf2#
      • 1...Be2!
    • 1.Qf6+?
      • 1...Kxc5
        • 2.Sxe6#
      • 1...e5!
    • 1.c3+?
      • 1...Kxc5
        • 2.Sxe6#
      • 1...Kd3!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qxe3#
      • 1...Kxc5
        • 2.Sxe6#
      • 1...Rb4
        • 2.Qf4#
      • 1...Rd6
        • 2.Qe5#
      • 1...e2
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINS(d),P_SPINR(i),S_FLIGHT,XP(H)::S(M),XP(j)
    • P(c);OGATEB::QAB(G)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(e);N_SPINS(d),S_FLIGHT
    • Try
      • S(F);CHECK
      • Refutation
        • K(e);N_SPINS(d),S_FLIGHT
    • Try
      • S(F);CHECK,XP(c)
      • Refutation
        • K(e);N_SPINS(d),S_FLIGHT,XS(F)
    • Try
      • S(F);CHECK
      • Refutation
        • K(e);N_SPINS(d),S_FLIGHT,XS(F)
    • Try
      • S(F);CHECK
      • Refutation
        • K(e);N_SPINS(d),S_FLIGHT
    • Try
      • Q(G);
      • Threat
        • QAB1(G),XP(c)
      • Vars
        • K(e);N_SPINS(d),P_SPINR(i),S_FLIGHT,XP(H)::S(M),XP(j)
        • R(i);N_SPINS(d),P_SPINS(g)::QAB1(G)
        • R(i);::QAR(G),XB(a)
        • P(c);OGATEB::QAB(G)
      • Refutation
        • B(a);
    • Try
      • Q(G);CHECK
      • Vars
        • K(e);N_SPINS(d),P_SPINR(i),S_FLIGHT,XP(H)::S(M),XP(j)
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • P(C);CHECK
      • Vars
        • K(e);N_SPINS(d),P_SPINR(i),S_FLIGHT,XP(H)::S(M),XP(j)
      • Refutation
        • K(e);N_SPINS(d),P-FLIGHT,P_SPINS(g)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G),XP(c)
    • Vars
      • K(e);N_SPINS(d),P_SPINR(i),P_SPINS(g),S_FLIGHT,XP(H)::S(M),XP(j)
      • R(i);N_SPINS(d),P_SPINS(g)::QAR2(G)
      • R(i);::QAB1(G)
      • P(c);::QAB1(G)
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