MESON Chess Problem Database

Problem Display
PID: 12275 (4KB2/2pP2R1/1pR1n3/1r2k3/1r4P1/1NPP1QP1/B4q2/2b5 w - - 0 1)

Velimirovic, Milan

1st Prize, Mat, 1977

4KB2/2pP2R1/1pR1n3/1r2k3/1r4P1/1NPP1QP1/B4q2/2b5

#2

12 + 8

261 Mat 1980
3750 FIDE Album (1977-1979) 1984
3335 Cyclone 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Qf5#
    • 1...Qg1
      • 2.Qf5#
    • 1...Qe3
      • 2.Qf5#
    • 1...Qxg3
      • 2.Qf5#
    • 1...Qd4
      • 2.Qf5#
    • 1...Qc5
      • 2.Qf5#
    • 1...Qxa2
      • 2.Qf5#
    • 1...Qb2
      • 2.Qf5#
    • 1...Qc2
      • 2.Qf5#
    • 1...Qd2
      • 2.Qf5#
    • 1...Qe2
      • 2.Qf5#
    • 1...Qg2
      • 2.Qf5#
    • 1...Qh2
      • 2.Qf5#
    • 1...Sd4
      • 2.Qe4#
    • 1...Sf4
      • 2.Rg5#
    • 1...Sxg7+
      • 2.Bxg7#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Rxe6#
      • 1...Sxg7+
        • 2.Bxg7#
      • 1...Sxf8
        • 2.Rg5#
      • 1...Rb3
        • 2.Sc4#
      • 1...Rc4
        • 2.Sxc4#
      • 1...Sd4
        • 2.Qe4#
      • 1...Sf4
        • 2.Rg5#
      • 1...Sc5
        • 2.Rg5#
        • 2.Qd5#
      • 1...Sg5
        • 2.Rxg5#
      • 1...Sd8
        • 2.Rg5#
      • 1...Rd5!
    • 1.Sd4?
      • threat
        • 2.Rxe6#
      • 1...Sxg7+
        • 2.Bxg7#
      • 1...Qxa2
        • 2.Qf5#
      • 1...Sxd4
        • 2.Qe4#
      • 1...Sxf8
        • 2.Qe4#
      • 1...Sf4
        • 2.Rg5#
        • 2.Qe4#
      • 1...Sc5
        • 2.Qd5#
      • 1...Sd8
        • 2.Qe4#
      • 1...Sg5!
    • 1.Rg5+?
      • 1...Sxg5
        • 2.Bg7#
      • 1...Bxg5!
    • 1.Qe4+?
      • 1...Kf6
        • 2.Rxe6#
        • 2.Rg6#
        • 2.Qxe6#
        • 2.d8Q#
        • 2.d8B#
      • 1...Rxe4!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Rxe6#
      • 1...Sxg7+
        • 2.Bxg7#
      • 1...Qxa2
        • 2.Qf5#
      • 1...Sxc5
        • 2.Qd5#
      • 1...Sxf8
        • 2.Qd5#
      • 1...Sd4
        • 2.Qe4#
        • 2.Qd5#
      • 1...Sf4
        • 2.Rg5#
      • 1...Sg5
        • 2.Qd5#
      • 1...Sd8
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 13
  • Sets
    • Q(b);N_GUARD::QAR1(E)
    • Q(b);N_GUARD,XP(F)::QAR1(E)
    • Q(b);N_GUARD,XB(A)::QAR1(E)
    • S(g);S_CUTR(c)::QAR1(E)
    • S(g);N_GUARD,S_CUTB(a)::R(J)
    • S(g);CHECK,OGATE,XR(J)::B(L),XS(g)
  • Tries
    • Try
      • S(B);
      • Threat
        • R1(H),XS(g)
      • Vars
        • S(g);CHECK,OGATE,XR(J)::B(L),XS(g)
        • S(g);N_GUARD,XB(L)::R(J)
        • R(c);N_GUARD::S(B)
        • R(c);N_GUARD::S(B),XR(c)
        • S(g);S_CUTR(c)::QAR1(E)
        • S(g);N_GUARD::R(J)
        • S(g);N_GUARD::R(J),XS(g)
      • Refutation
        • R(d);
    • Try
      • S(B);
      • Threat
        • R1(H),XS(g)
      • Vars
        • S(g);CHECK,OGATE,XR(J)::B(L),XS(g)
        • Q(b);N_GUARD,XB(A)::QAR1(E)
        • S(g);XS(B)::QAR1(E)
        • S(g);XB(L)::QAR1(E)
        • S(g);S_CUTR(d)::QAR1(E)
        • S(g);::QAR1(E)
      • Refutation
        • S(g);
    • Try
      • R(J);CHECK
      • Vars
        • S(g);XR(J)::B(L)
      • Refutation
        • B(a);XR(J)
    • Try
      • Q(E);CHECK
      • Refutation
        • R(c);XQ(E)
  • Actual
    • S(B);
    • Threat
      • R1(H),XS(g)
    • Vars
      • S(g);CHECK,OGATE,XR(J)::B(L),XS(g)
      • Q(b);N_GUARD,XB(A)::QAR1(E)
      • S(g);XS(B)::QAR1(E)
      • S(g);XB(L)::QAR1(E)
      • S(g);N_GUARD,S_CUTB(a)::R(J)
      • S(g);::QAR1(E)
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