MESON Chess Problem Database

Problem Display
PID: 138168 (7k/4N1p1/7p/1r1b2N1/8/4p1K1/8/3Q4 w - - 0 1)

Nesic, Milivoj S

Politika, 1964

7k/4N1p1/7p/1r1b2N1/8/4p1K1/8/3Q4

#2

4 + 6

6490 yacpdb 2011
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bh1
      • 2.Qd8#
    • 1...Bg2
      • 2.Qd8#
    • 1...Bf3
      • 2.Qd8#
    • 1...Be4
      • 2.Qd8#
    • 1...Bb7
      • 2.Qd8#
    • 1...Ba8
      • 2.Qd8#
    • 1...Bg8
      • 2.Sg6#
    • 1...hxg5
      • 2.Qh5#
    • 1...h5
      • 2.Qxh5#
    • 1...g6
      • 2.Qd4#
  • Tries
    • 1.Qd3?
      • threat
        • 2.Qh7#
      • 1...g6
        • 2.Qc3#
        • 2.Qd4#
      • 1...Be4
        • 2.Qd8#
      • 1...Bg8
        • 2.Sg6#
      • 1...hxg5!
    • 1.Qxd5?
      • threat
        • 2.Sg6#
        • 2.Qg8#
        • 2.Qd8#
      • 1...hxg5
        • 2.Qh1#
        • 2.Qg8#
      • 1...g6
        • 2.Qg8#
      • 1...Rb6
        • 2.Qg8#
        • 2.Qd8#
      • 1...Rb8
        • 2.Sg6#
      • 1...Rxd5!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qh7#
      • 1...hxg5
        • 2.Qh2#
      • 1...g6
        • 2.Qc3#
      • 1...Be4
        • 2.Qc8#
      • 1...Bg8
        • 2.Sg6#

This anticipates 104527(1996)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • B(c);OGATE::QAR(A)
    • B(c);SBLOCK::S(D)
    • P(d);OGATEB,XS(C)::QAR(A)
    • P(d);OGATEB::QAR(A),XP(d)
    • P(e);OGATEB::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • B(c);OGATE::QAR(A)
        • B(c);SBLOCK::S(D)
      • Refutation
        • P(d);XS(C)
    • Try
      • Q(A);XB(c)
      • Threat
        • DUALS(3)
      • Vars
        • P(e);::QAR1(A)
        • R(b);::S(D)
      • Refutation
        • R(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • P(d);OGATEB,XS(C)::QAR(A)
      • P(e);OGATEB::QAB(A)
      • B(c);N_GUARD::QAR(A)
      • B(c);SBLOCK::S(D)
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