MESON Chess Problem Database

Problem Display
PID: 259210 (Nq5n/rbp1BB2/4R3/1p1k1P1p/3p3p/pP2pK2/2P1P3/Q7 w - - 0 1)

Kovacevic, Marjan

3rd Prize, Selivanov-50 JT, 2017

Nq5n/rbp1BB2/4R3/1p1k1P1p/3p3p/pP2pK2/2P1P3/Q7

#2

10 + 12

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qe8
      • 2.Sxc7#
    • 1...Qf8
      • 2.Sxc7#
    • 1...Qg8
      • 2.Sxc7#
    • 1...d3
      • 2.Qe5#
    • 1...c5
      • 2.Sb6#
    • 1...c6
      • 2.Sb6#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Qc5#
      • 1...c5
        • 2.Sb6#
        • 2.Qxc5#
      • 1...dxc3!
    • 1.Qh1?
      • threat
        • 2.Kf4#
      • 1...d3
        • 2.Kxe3#
      • 1...Qg8
        • 2.Sxc7#
      • 1...c5
        • 2.Sb6#
      • 1...c6
        • 2.Sb6#
      • 1...Sg6!
    • 1.c4+?
      • 1...dxc4 ep
        • 2.Qd1#
      • 1...bxc4!
    • 1.b4?
      • threat
        • 2.Qa2#
      • 1...Kc4+
        • 2.Rc6#
      • 1...d3
        • 2.Rd6#
      • 1...c5
        • 2.Sb6#
      • 1...a2!
  • Keys
    • 1.Kf4!
      • threat
        • 2.Qh1#
      • 1...Sg6+
        • 2.Rxg6#
      • 1...c5+
        • 2.Rd6#
      • 1...c6+
        • 2.Re5#
      • 1...Qg8
        • 2.Sxc7#
      • 1...d3
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(k);N_GUARD::S(J),XP(j)
    • P(c);OGATE::QAR1(A)
    • P(j);N_GUARD::S(J)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB(A)+K(E)
      • Vars
        • P(c);::QAB(A)+K(E),XP(b)
        • Q(k);N_GUARD::S(J),XP(j)
        • P(j);N_GUARD::S(J)
      • Refutation
        • S(l);
    • Try
      • P(B);CHECK
      • Vars
        • P(c);EP,S_CUTP(e),XP(B)::QAR(A)
      • Refutation
        • P(e);XP(B)
    • Try
      • P(D);
      • Threat
        • QAB(A)
      • Vars
        • K(f);CHECK,N_GUARD,S_FLIGHT::B(I)+R(G),DCHECK
        • P(c);::B(I)+R(G),DCHECK
        • P(j);N_GUARD::S(J)
      • Refutation
        • P(a);
  • Actual
    • K(E);P-FLIGHT
    • Threat
      • QAB(A)
    • Vars
      • S(l);CHECK,N_GUARD::B(I)+R(G),XS(l)
      • P(j);CHECK,SBLOCK::B(I)+R(G),DCHECK
      • Q(k);N_GUARD::S(J),XP(j)
      • P(c);OGATE::QAR1(A)
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Developed and maintained by Brian Stephenson.
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