MESON Chess Problem Database

Problem Display
PID: 203830 (3r1n2/p2Q2p1/3p4/2ppp2p/N2k1N2/6BK/p4P2/r2nRB2 w - - 0 1)

Labai, Zoltan

Sp. HM., Pravda (Bratislava), 1971-1972

3r1n2/p2Q2p1/3p4/2ppp2p/N2k1N2/6BK/p4P2/r2nRB2

#2

8 + 13

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf2+
      • 2.Bxf2#
    • 1...Se6
      • 2.Sxe6#
    • 1...Sg6
      • 2.Se6#
    • 1...Sxd7
      • 2.Se6#
    • 1...Sh7
      • 2.Se6#
    • 1...c4
      • 2.Qxa7#
    • 1...exf4
      • 2.Qxg7#
    • 1...e4
      • 2.Qxg7#
  • Tries
    • 1.Rxd1+?
      • 1...Ke4
        • 2.Bg2#
      • 1...Rxd1!
    • 1.Qg4?
      • threat
        • 2.Se6#
      • 1...Sxf2+
        • 2.Bxf2#
      • 1...exf4
        • 2.Qxf4#
        • 2.Qxg7#
      • 1...e4
        • 2.Qxg7#
      • 1...Se6
        • 2.Sxe6#
      • 1...hxg4+!
    • 1.Qf5?
      • threat
        • 2.Qd3#
      • 1...Sxf2+
        • 2.Bxf2#
      • 1...c4
        • 2.Se2#
      • 1...e4
        • 2.Qxd5#
      • 1...Sb2!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qd3#
      • 1...Sxf2+
        • 2.Bxf2#
      • 1...e4
        • 2.Se2#
      • 1...Sb2
        • 2.Qxb2#
      • 1...c4
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • S(b);CHECK,OGATE,XP(C)::B(D),XS(b)
    • S(m);N_GUARD::S(G),XS(m)
    • S(m);N_GUARD::S(G)
    • S(m);N_GUARD,XQ(H)::S(G)
    • P(e);OGATEB::QAB(H),XP(j)
    • P(g);OGATEB,XS(G)::QAB(H),XP(k)
    • P(g);OGATEB::QAB(H),XP(k)
  • Tries
    • Try
      • R(A);CHECK,XS(b)
      • Vars
        • K(d);P-FLIGHT::B(B)
      • Refutation
        • R(a);XR(A)
    • Try
      • Q(H);
      • Threat
        • QAR(H)+S(G),DCHECK
      • Vars
        • S(b);CHECK,OGATE,XP(C)::B(D),XS(b)
        • P(g);OGATEB::QAB(H),XP(k)
        • S(m);::QAR(H)+S(G),DCHECK,XS(m)
      • Refutation
        • P(h);CHECK,XQ(H)
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • S(b);CHECK,OGATE,XP(C)::B(D),XS(b)
        • P(e);SBLOCK::S(G)
        • P(g);OGATE::QAR1(H),XP(f)
      • Refutation
        • S(b);
  • Actual
    • Q(H);
    • Threat
      • QAR1(H)
    • Vars
      • S(b);CHECK,OGATE,XP(C)::B(D),XS(b)
      • P(g);SBLOCK::S(G)
      • S(b);N_GUARD::QAB(H),XS(b)
      • P(e);OGATE::QAR1(H),XP(f)
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