MESON Chess Problem Database

Problem Display
PID: 110309 (1K2Q3/pNR2P1B/6nq/3N4/r2p1P2/3k3p/8/4B3 w - - 0 1)

Mlynka, Karol

CSTV, 1973

1K2Q3/pNR2P1B/6nq/3N4/r2p1P2/3k3p/8/4B3

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4
      • 2.Sxf4#
    • 1...Qf8
      • 2.Bxg6#
    • 1...Qh4
      • 2.Bxg6#
    • 1...Ra1
      • 2.Sb4#
    • 1...Ra2
      • 2.Sb4#
    • 1...Ra3
      • 2.Sb4#
    • 1...Rb4
      • 2.Sxb4#
    • 1...Ra5
      • 2.Sb4#
    • 1...Ra6
      • 2.Sb4#
  • Tries
    • 1.Sf6?
      • threat
        • 2.Qe4#
      • 1...Qf8
        • 2.Bxg6#
      • 1...Qxf4!
    • 1.Rc1?
      • threat
        • 2.Sc5#
      • 1...Qxf4+
        • 2.Sxf4#
      • 1...Qf8
        • 2.Bxg6#
      • 1...Rb4
        • 2.Sxb4#
      • 1...Ra5
        • 2.Sb4#
      • 1...Rc4!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qe4#
      • 1...Rb4+
        • 2.Sxb4#
      • 1...Qxf4
        • 2.Sxf4#
      • 1...Qf8
        • 2.Bxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • Q(f);P_PINR(E),XP(B)::S(C),XQ(f)
    • Q(f);N_GUARD,P_PINQ(I)::B(G),XS(e)
    • Q(f);N_GUARD::B(G),XS(e)
    • R(c);N_GUARD::S(C)
    • R(c);N_GUARD,P_PINS(D)::S(C),XR(c)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(I)
      • Vars
        • Q(f);N_GUARD,P_PINQ(I)::B(G),XS(e)
      • Refutation
        • Q(f);P_PINR(E),XP(B)
    • Try
      • R(E);
      • Threat
        • S(D)
      • Vars
        • Q(f);CHECK,XP(B)::S(C),XQ(f)
        • Q(f);N_GUARD,P_PINQ(I)::B(G),XS(e)
        • R(c);N_GUARD,P_PINS(D)::S(C),XR(c)
        • R(c);N_GUARD::S(C)
      • Refutation
        • R(c);
  • Actual
    • S(D);
    • Threat
      • QAB1(I)
    • Vars
      • R(c);CHECK,N_GUARD::S(C),XR(c)
      • Q(f);XP(B)::S(C),XQ(f)
      • Q(f);N_GUARD,P_PINQ(I)::B(G),XS(e)
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