MESON Chess Problem Database

Problem Display
PID: 136525 (3n1b1r/1B2R1p1/2q3n1/1pp1p3/1P4N1/1RK2k1p/r1p2N1P/2B2Q2 w - - 0 1)

Djurasevic, Branislav

9th Place, Liga Problemista, 1987

3n1b1r/1B2R1p1/2q3n1/1pp1p3/1P4N1/1RK2k1p/r1p2N1P/2B2Q2

#2

10 + 13

15526 Svi Moji Sahovski Problemi (Djurasevic) 1992
6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Bxe4#
    • 1...Ra1
      • 2.Kb2#
      • 2.Kxc2#
    • 1...Rb2
      • 2.Kxb2#
    • 1...Ra4
      • 2.Kb2#
      • 2.Kxc2#
    • 1...Ra5
      • 2.Kb2#
      • 2.Kxc2#
    • 1...Ra6
      • 2.Kb2#
      • 2.Kxc2#
    • 1...Ra7
      • 2.Kb2#
      • 2.Kxc2#
    • 1...Ra8
      • 2.Kb2#
      • 2.Kxc2#
    • 1...Sf4
      • 2.Sxe5#
    • 1...Sh4
      • 2.Sxe5#
    • 1...Sxe7
      • 2.Sxe5#
    • 1...cxb4+
      • 2.Kxb4#
  • Tries
    • 1.Sd1+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kxg4!
    • 1.Sh1+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kxg4!
    • 1.Sxh3+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kxg4!
    • 1.Se4+?
      • 1...Kxe4
        • 2.Qd3#
      • 1...Kxg4!
    • 1.Sf6?
      • threat
        • 2.Sd1#
        • 2.Sh1#
        • 2.Sd3#
        • 2.Sxh3#
        • 2.S2e4#
        • 2.S2g4#
      • 1...cxb4+
        • 2.Kxb4#
      • 1...Qe4
        • 2.Sd1#
        • 2.Sh1#
        • 2.Sd3#
        • 2.Sxh3#
        • 2.S2xe4#
        • 2.S2g4#
        • 2.Bxe4#
      • 1...e4
        • 2.Sd1#
        • 2.Sh1#
        • 2.Sd3#
        • 2.Sxh3#
        • 2.S2xe4#
        • 2.S2g4#
      • 1...gxf6!
    • 1.Bxc6+?
      • 1...e4
        • 2.Bxe4#
      • 1...Sxc6!
    • 1.Rf7+?
      • 1...Sf4
        • 2.Kd2#
        • 2.Sxe5#
      • 1...Sxf7!
  • Keys
    • 1.Rxe5!
      • threat
        • 2.Qh1#
      • 1...cxb4+
        • 2.Kd4#
      • 1...Sxe5
        • 2.Sxe5#
      • 1...Qe4
        • 2.Bxe4#
      • 1...Sf4
        • 2.Re3#
      • 1...Sh4
        • 2.Qxh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(h);OGATE::B(I),XQ(h)
    • R(a);::R(E)+K(F),XR(a)
    • S(i);N_GUARD::S(H),XP(g)
    • S(i);N_GUARD,XR(J)::S(H),XP(g)
    • P(f);CHECK,XP(G)::R(E)+K(F),XP(f)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P_SPINP(g),S_FLIGHT::QAB1(B)
      • Refutation
        • K(c);N_SPINQ(h),S_FLIGHT,XS(H)
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P_SPINP(g),S_FLIGHT::QAB1(B)
      • Refutation
        • K(c);N_SPINQ(h),S_FLIGHT,XS(H)
    • Try
      • S(C);CHECK,XP(d)
      • Vars
        • K(c);P_SPINP(g),S_FLIGHT::QAB1(B)
      • Refutation
        • K(c);N_SPINQ(h),S_FLIGHT,XS(H)
    • Try
      • S(C);CHECK,N_PINQ(h)
      • Vars
        • K(c);P_SPINP(g),P_SPINQ(h),S_FLIGHT,XS(C)::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT,XS(H)
    • Try
      • S(H);
      • Threat
        • DUALS(6)
      • Vars
        • P(f);CHECK,XP(G)::R(E)+K(F),XP(f)
      • Refutation
        • P(j);XS(H)
    • Try
      • B(I);CHECK,XQ(h)
      • Vars
        • P(g);P_SPINP(g)::B(I),XP(g)
      • Refutation
        • S(k);XB(I)
    • Try
      • R(J);CHECK
      • Refutation
        • S(k);XR(J)
  • Actual
    • R(J);XP(g)
    • Threat
      • QAB(B)
    • Vars
      • P(f);CHECK,XP(G)::R(E)+K(F)
      • S(i);XR(J)::S(H),XS(i)
      • Q(h);OGATE::B(I),XQ(h)
      • S(i);SBLOCK::R1(J)
      • S(i);S_CUTR(m)::QAR2(B),XP(d)
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