MESON Chess Problem Database

Problem Display
PID: 170953 (b2BN3/7R/1Ppp4/1pk1p3/p1P1P3/p1Q2N2/P7/4K3 w - - 0 1)

Janevski, Zivko

3rd Place, Liga Problemista, 1998

b2BN3/7R/1Ppp4/1pk1p3/p1P1P3/p1Q2N2/P7/4K3

#2

10 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...bxc4
      • 2.Qa5#
    • 1...d5
      • 2.cxd5#
  • Tries
    • 1.Sd2?
      • 1...bxc4
        • 2.Qxc4#
      • 1...b4
        • 2.Qe3#
      • 1...d5
        • 2.cxd5#
      • 1...Bb7!
    • 1.Sxe5?
      • threat
        • 2.Sd3#
        • 2.Sd7#
      • 1...bxc4
        • 2.Qxc4#
      • 1...dxe5!
    • 1.Sf6?
      • threat
        • 2.Sd7#
      • 1...bxc4
        • 2.Qa5#
      • 1...d5!
    • 1.Sg7?
      • threat
        • 2.Se6#
      • 1...bxc4
        • 2.Qa5#
      • 1...d5!
    • 1.Rh5?
      • 1...bxc4
        • 2.Qa5#
      • 1...b4
        • 2.Qd4#
      • 1...d5
        • 2.cxd5#
      • 1...Bb7!
    • 1.Ra7?
      • 1...bxc4
        • 2.Ra5#
        • 2.Qa5#
      • 1...b4
        • 2.Ra5#
      • 1...d5
        • 2.cxd5#
      • 1...Bb7!
    • 1.Qxa3+?
      • 1...Kxc4
        • 2.Sxd6#
      • 1...b4!
  • Keys
    • 1.Sxd6!
      • 1...Kxd6
        • 2.Qxe5#
      • 1...bxc4
        • 2.Qxa3#
      • 1...Bb7
        • 2.Sxb7#
      • 1...b4
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATEB,P_SPINP(c),SBLOCK,XP(E)::QAR2(C)
    • P(g);OGATE::QAR(C)+P(E),XP(g)
  • Tries
    • Try
      • S(D);
      • Vars
        • P(c);OGATE,P_SPINP(c),XP(E)::QAR1(C),XP(c)
        • P(c);SBLOCK::QAB(C)
        • P(g);OGATE::QAR(C)+P(E),XP(g)
      • Refutation
        • B(h);
    • Try
      • S(D);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATE,P_SPINP(c),XP(E)::QAR1(C),XP(c)
      • Refutation
        • P(g);XS(D)
    • Try
      • S(J);
      • Threat
        • S(J)
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK,XP(E)::QAR2(C)
      • Refutation
        • P(g);
    • Try
      • S(J);
      • Threat
        • S(J)
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK,XP(E)::QAR2(C)
      • Refutation
        • P(g);
    • Try
      • R(H);P_PINP(e)
      • Vars
        • P(c);N_SPINP(e),OGATEB,P_SPINP(c),SBLOCK,XP(E)::QAR2(C)
        • P(c);SBLOCK::QAB1(C)
        • P(g);N_SPINP(e),OGATE::QAR(C)+P(E),XP(g)
      • Refutation
        • B(h);
    • Try
      • R(H);
      • Vars
        • P(c);OGATEB::R(H)
        • P(g);OGATE::QAR(C)+P(E),XP(g)
      • Refutation
        • B(h);
    • Try
      • Q(C);CHECK,XP(a)
      • Vars
        • K(d);P-FLIGHT,XP(E)::S(J),XP(g)
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • S(J);XP(g)
    • Vars
      • K(d);S_FLIGHT,XS(J)::QAB1(C),XP(e)
      • P(c);N_GUARD,P_SPINP(c),XP(E)::QAB(C),XP(a)
      • B(h);N_GUARD::S(J),XB(h)
      • P(c);SBLOCK::QAR2(C),XP(e)
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