MESON Chess Problem Database

Problem Display
PID: 134302 (bq1rR3/3p2N1/r5p1/6p1/2pQpkN1/6RK/6PP/4nn2 w - - 0 1)

Taraba, Jozef

4th Prize, Pravda, 1984

bq1rR3/3p2N1/r5p1/6p1/2pQpkN1/6RK/6PP/4nn2

#2

8 + 12

14580 Chess Compositions (Taraba) 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Qxe5#
    • 1...Qa7
      • 2.Qe5#
    • 1...Qb1
      • 2.Qe5#
    • 1...Qb3
      • 2.Qe5#
    • 1...Qb4
      • 2.Qe5#
    • 1...Qb6
      • 2.Qe5#
    • 1...Qb7
      • 2.Qe5#
    • 1...Qc8
      • 2.Qe5#
    • 1...Ra1
      • 2.Qf6#
    • 1...Ra2
      • 2.Qf6#
    • 1...Ra3
      • 2.Qf6#
    • 1...Ra4
      • 2.Qf6#
    • 1...Rc6
      • 2.Rxe4#
      • 2.Qxe4#
    • 1...Rd6
      • 2.Qe5#
    • 1...Rf6
      • 2.Qxf6#
    • 1...Ra7
      • 2.Qf6#
    • 1...Bc6
      • 2.Qf6#
    • 1...Sc2
      • 2.Rf3#
      • 2.Qf2#
    • 1...Sxg2
      • 2.Qf2#
    • 1...Sd3
      • 2.Rf3#
    • 1...Sf3
      • 2.Rxf3#
    • 1...Sd2
      • 2.Qe3#
    • 1...Sxh2
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sxg3
      • 2.Qe3#
      • 2.hxg3#
    • 1...d6
      • 2.Qf6#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Rg4#
      • 1...g4+
        • 2.Rxg4#
      • 1...Sxh2
        • 2.Qe3#
      • 1...Sxg3
        • 2.hxg3#
      • 1...Qb3
        • 2.Qe5#
      • 1...Ra3
        • 2.Qf6#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sxg2!
    • 1.Se3?
      • threat
        • 2.Rg4#
      • 1...g4+
        • 2.Rxg4#
      • 1...Sxg2
        • 2.Sxg2#
      • 1...Sxe3
        • 2.Qxe3#
      • 1...Sxg3
        • 2.hxg3#
      • 1...Sxh2!
    • 1.Se5?
      • threat
        • 2.Rg4#
      • 1...g4+
        • 2.Rxg4#
      • 1...Sxh2
        • 2.Qe3#
      • 1...Sxg3
        • 2.hxg3#
      • 1...Ra3
        • 2.Sxg6#
      • 1...Se3
        • 2.Qxe3#
      • 1...Qb3!
    • 1.Sf6?
      • threat
        • 2.Rg4#
      • 1...g4+
        • 2.Rxg4#
      • 1...Sxg2
        • 2.Qf2#
      • 1...Sxh2
        • 2.Qe3#
      • 1...Sxg3
        • 2.hxg3#
      • 1...Qb3
        • 2.Qe5#
      • 1...Se3
        • 2.Qxe3#
      • 1...Ra3!
    • 1.Sh5+?
      • 1...Kf5
        • 2.Sh6#
      • 1...gxh5!
    • 1.Se6+?
      • 1...Kf5
        • 2.Sh6#
        • 2.Qf6#
      • 1...dxe6
        • 2.Qf6#
      • 1...Rxe6!
    • 1.Rf8+?
      • 1...Rf6
        • 2.Rxf6#
        • 2.Qxf6#
      • 1...Rxf8!
  • Keys
    • 1.Sh6!
      • threat
        • 2.Rg4#
      • 1...g4+
        • 2.Rxg4#
      • 1...Sxg2
        • 2.Qf2#
      • 1...Sxh2
        • 2.Qe3#
      • 1...Sxg3
        • 2.hxg3#
      • 1...Qb3
        • 2.Qe5#
      • 1...Ra3
        • 2.Qf6#
      • 1...Se3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 18
  • Sets
    • Q(k);N_GUARD::QAB1(E),XQ(k)
    • Q(k);N_GUARD::QAB1(E)
    • Q(k);N_GUARD,P_PINR(C)::QAB1(E)
    • R(g);N_GUARD::QAR2(E)
    • R(g);N_GUARD,P_PINR(C)::QAR2(E)
    • R(g);S_CUTQ(k)::QAB1(E)
    • R(g);N_GUARD::QAR2(E),XR(g)
    • B(j);S_CUTR(g)::QAR2(E)
    • S(a);N_GUARD,XP(A)::QAR2(E)
    • S(a);N_GUARD::R1(C)
    • S(a);N_GUARD::R1(C),XS(a)
    • S(b);N_GUARD::QAB1(E)
    • S(b);N_GUARD,XP(B)::QAB1(E)
    • S(b);N_GUARD::QAB1(E),XS(b)
    • P(i);S_CUTR(g)::QAR2(E)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(C)
      • Vars
        • P(f);CHECK::R1(C),XP(f)
        • S(b);N_GUARD,XP(B)::QAB1(E)
        • S(b);OGATE,XR(C)::P(B),XS(b)
        • Q(k);N_GUARD,P_PINR(C)::QAB1(E)
        • R(g);N_GUARD,P_PINR(C)::QAR2(E)
        • S(b);N_GUARD::QAB1(E),XS(b)
      • Refutation
        • S(a);XP(A)
    • Try
      • S(F);
      • Threat
        • R1(C)
      • Vars
        • P(f);CHECK::R1(C),XP(f)
        • S(a);XP(A)::S(F),XS(a)
        • S(b);OGATE,XS(F)::QAB1(E),XS(b)
        • S(b);OGATE,XR(C)::P(B),XS(b)
      • Refutation
        • S(b);XP(B)
    • Try
      • S(F);
      • Threat
        • R1(C)
      • Vars
        • P(f);CHECK::R1(C),XP(f)
        • S(b);N_GUARD,XP(B)::QAB1(E)
        • S(b);OGATE,XR(C)::P(B),XS(b)
        • R(g);N_GUARD,P_PINR(C)::S(F),XP(h)
        • S(b);N_GUARD::QAB1(E),XS(b)
      • Refutation
        • Q(k);P_PINR(C)
    • Try
      • S(F);
      • Threat
        • R1(C)
      • Vars
        • P(f);CHECK::R1(C),XP(f)
        • S(a);N_GUARD,XP(A)::QAR2(E)
        • S(b);N_GUARD,XP(B)::QAB1(E)
        • S(b);OGATE,XR(C)::P(B),XS(b)
        • Q(k);N_GUARD,P_PINR(C)::QAB1(E)
        • S(b);N_GUARD::QAB1(E),XS(b)
      • Refutation
        • R(g);P_PINR(C)
    • Try
      • S(G);CHECK
      • Vars
        • K(e);N_SPINP(d),P-FLIGHT::S(F)
      • Refutation
        • P(h);XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • P(i);XS(G)::QAR2(E)
      • Refutation
        • R(g);XS(G)
    • Try
      • R(H);CHECK
      • Refutation
        • R(l);XR(H)
  • Actual
    • S(F);
    • Threat
      • R1(C)
    • Vars
      • P(f);CHECK::R1(C),XP(f)
      • S(a);N_GUARD,XP(A)::QAR2(E)
      • S(b);N_GUARD,XP(B)::QAB1(E)
      • S(b);OGATE,XR(C)::P(B),XS(b)
      • Q(k);N_GUARD,P_PINR(C)::QAB1(E)
      • R(g);N_GUARD,P_PINR(C)::QAR2(E)
      • S(b);N_GUARD::QAB1(E),XS(b)
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