MESON Chess Problem Database

Problem Display
PID: 138527 (3KR3/5Q2/3p2Rr/N1P5/1nPkB3/B1pp1n2/q1b2P2/8 w - - 0 1)

Nesic, Milivoj S

Illustrovana Politika, 1967

3KR3/5Q2/3p2Rr/N1P5/1nPkB3/B1pp1n2/q1b2P2/8

#2

10 + 9

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Qa7#
    • 1...Qxc4
      • 2.Qxc4#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sa6
      • 2.Sc6#
      • 2.Qd5#
    • 1...Sc6+
      • 2.Sxc6#
  • Tries
    • 1.Bxb4?
      • threat
        • 2.Sc6#
        • 2.Qd5#
      • 1...Qxc4
        • 2.Sc6#
        • 2.Qxc4#
      • 1...Se5
        • 2.Qd5#
      • 1...Qa4
        • 2.Qd5#
      • 1...Rh5
        • 2.Sc6#
      • 1...Ba4
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
      • 1...Qxa5+!
    • 1.Rxd6+?
      • 1...Kxc5
        • 2.Sb7#
        • 2.Qd5#
        • 2.Qc7#
      • 1...Sd5
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Rxd6+!
    • 1.Qf6+?
      • 1...Kxc5
        • 2.Qxd6#
      • 1...Se5!
    • 1.Qg7+?
      • 1...Kxc5
        • 2.Qa7#
      • 1...Se5!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qe3#
      • 1...Sc6+
        • 2.Bxc6#
      • 1...Kxc5
        • 2.Qxd6#
      • 1...Sd5
        • 2.Bxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(g);OGATEB,P_SPINS(f),S_FLIGHT,XP(F)::QAB(H)
    • Q(a);OGATE,XP(C)::QAR1(H),XQ(a)
    • S(f);N_GUARD::QAR1(H),XS(f)
    • S(f);CHECK,N_GUARD::S(E),XS(f)
  • Tries
    • Try
      • B(B);XS(f)
      • Threat
        • DUALS(2)
      • Vars
        • S(e);::QAR1(H)
        • Q(a);::QAR1(H)
        • R(i);::S(E)
        • B(b);::QAR1(H)
        • P(h);::QAR1(H),XP(h)
      • Refutation
        • Q(a);CHECK,XS(E)
    • Try
      • R(G);CHECK,XP(h)
      • Refutation
        • R(i);CHECK,XR(G)
    • Try
      • Q(H);CHECK
      • Vars
        • K(g);P_SPINS(f),S_FLIGHT,XP(F)::QAB1(H),XP(h)
      • Refutation
        • S(e);P_SPINS(e)
    • Try
      • Q(H);CHECK
      • Vars
        • K(g);OGATEB,P_SPINS(f),S_FLIGHT,XP(F)::QAB(H)
      • Refutation
        • S(e);P_SPINS(e)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • S(f);CHECK::QAR(H)+B(D),XS(f)
      • K(g);P_SPINS(f),S_FLIGHT,XP(F)::QAB1(H),XP(h)
      • S(f);::QAR(H)+B(D),XS(f)
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