MESON Chess Problem Database

Problem Display
PID: 261079 (8/2p5/3p1K2/3k1N2/2p1N1B1/Q7/8/8 w - - 0 1)

Glisic, Dejan I

Prusac, Miljenko

Neue Zurcher Zeitung, 2013

8/2p5/3p1K2/3k1N2/2p1N1B1/Q7/8/8

#2

5 + 4

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qf3#
    • 1...c5
      • 2.Qa8#
    • 1...c6
      • 2.Sc3#
  • Tries
    • 1.Bf3?
      • threat
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sc3#
        • 2.Seg3#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sexd6#
      • 1...c3
        • 2.Sd2#
        • 2.Sexd6#
      • 1...c5
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sc3#
        • 2.Seg3#
        • 2.Sxc5#
        • 2.Sg5#
        • 2.Sexd6#
        • 2.Qa8#
      • 1...Kc6!
    • 1.Qb2?
      • 1...Kxe4
        • 2.Qd4#
      • 1...Kc6
        • 2.Se7#
      • 1...c5
        • 2.Qb7#
      • 1...c6
        • 2.Qd4#
      • 1...c3!
    • 1.Qc5+?
      • 1...Kxe4
        • 2.Qd4#
        • 2.Qxc4#
      • 1...dxc5!
    • 1.Qxd6+?
      • 1...Kxe4
        • 2.Qd4#
      • 1...cxd6!
    • 1.Qa4?
      • 1...Kxe4
        • 2.Qxc4#
      • 1...c3
        • 2.Se3#
        • 2.Se7#
      • 1...c5
        • 2.Sc3#
        • 2.Qa8#
      • 1...c6!
  • Keys
    • 1.Qb4!
      • 1...Kxe4
        • 2.Qxc4#
      • 1...Kc6
        • 2.Se7#
      • 1...c3
        • 2.Se7#
      • 1...c5
        • 2.Qb7#
      • 1...c6
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,S_FLIGHT,XS(B)::QAB1(A)
    • P(d);N_GUARD::QAB(A)
    • P(d);SBLOCK::S(B)
  • Tries
    • Try
      • B(C);
      • Threat
        • DUALS(7)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);N_GUARD,S_FLIGHT,XS(B)::QAR1(A)
        • K(b);N_GUARD,S_FLIGHT::S(D)
        • P(d);N_GUARD::QAB(A)
        • P(d);SBLOCK::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);CHECK
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);CHECK,XP(c)
      • Vars
        • K(b);OGATE,S_FLIGHT,XS(B)::QAR1(A)
      • Refutation
        • P(d);XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(b);N_GUARD,P_SPINP(a),S_FLIGHT,XS(B)::QAR2(A),XP(a)
      • Refutation
        • P(d);
  • Actual
    • Q(A);
    • Vars
      • K(b);N_GUARD,P_SPINP(a),S_FLIGHT,XS(B)::QAR2(A),XP(a)
      • K(b);N_GUARD,S_FLIGHT::S(D)
      • P(a);::S(D)
      • P(d);N_GUARD::QAB(A)
      • P(d);SBLOCK::S(B)
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