MESON Chess Problem Database

Problem Display
PID: 104714 (4K3/4PP1P/B1R1Rr2/3k1N2/4p1Qq/1b6/2nPP3/8 w - - 0 1)

Mikitovics, Janos

Vizugyi Sports Club, 1981

4K3/4PP1P/B1R1Rr2/3k1N2/4p1Qq/1b6/2nPP3/8

#2

11 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Qxe4#
    • 1...Qf2
      • 2.Qxe4#
    • 1...Qg3
      • 2.Qxe4#
    • 1...Qg5
      • 2.Qxe4#
    • 1...Qh2
      • 2.Qxe4#
    • 1...Qh3
      • 2.Qxe4#
    • 1...Qh5
      • 2.Qxe4#
    • 1...Qh6
      • 2.Qxe4#
    • 1...Qxh7
      • 2.Qxe4#
    • 1...Ba4
      • 2.Bc4#
    • 1...Bc4
      • 2.Bxc4#
    • 1...Sd4
      • 2.Se3#
  • Tries
    • 1.Se3+?
      • 1...Kd4
        • 2.Rxe4#
      • 1...Sxe3!
    • 1.Rc5+?
      • 1...Kxe6
        • 2.Bc8#
      • 1...Kxc5!
    • 1.Qxh4?
      • threat
        • 2.Qxe4#
      • 1...e3
        • 2.Qh1#
        • 2.Qe4#
      • 1...Rxe6!
  • Keys
    • 1.d4!
      • threat
        • 2.Rcd6#
      • 1...Rxe6
        • 2.Rc5#
      • 1...Sxd4
        • 2.Se3#
      • 1...exd4 ep
        • 2.e4#
      • 1...Qg3
        • 2.Qxe4#
      • 1...Qh2
        • 2.Qxe4#
      • 1...Ba4
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(d);N_GUARD::QAB1(C),XP(c)
    • Q(d);N_GUARD,P_PINP(I)::QAB1(C),XP(c)
    • Q(d);N_GUARD,XP(J)::QAB1(C),XP(c)
    • B(b);N_GUARD,P_PINR(F)::B(E)
    • B(b);N_GUARD::B(E),XB(b)
    • S(a);N_GUARD,SBLOCK::S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINP(c)::R1(G),XP(c)
      • Refutation
        • S(a);XS(D)
    • Try
      • R(F);CHECK
      • Vars
        • K(e);S_FLIGHT,XR(G)::B(E)
      • Refutation
        • K(e);P-FLIGHT,XR(F)
    • Try
      • Q(C);XQ(d)
      • Threat
        • QAB1(C),XP(c)
      • Refutation
        • R(f);P_PINP(H),XR(G)
  • Actual
    • P(A);
    • Threat
      • R1(F)
    • Vars
      • R(f);P_PINP(H),SBLOCK,XR(G)::R1(F)
      • S(a);N_GUARD,SBLOCK,XP(A)::S(D)
      • P(c);EP,OGATE,XP(A)::P(B)
      • Q(d);N_GUARD::QAB1(C),XP(c)
      • B(b);N_GUARD,P_PINR(F)::B(E)
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