MESON Chess Problem Database

Problem Display
PID: 39813 (3K4/7B/3Np2p/1p3N1r/7p/2pk4/R2b4/3QnbB1 w - - 0 1)

Lindner, Laszlo

Pesti Naplo, 1934

3K4/7B/3Np2p/1p3N1r/7p/2pk4/R2b4/3QnbB1

#2

7 + 10

4080 Mattbilder eines Lebens 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qxf1#
    • 1...Sg2
      • 2.Qxf1#
    • 1...Sf3
      • 2.Qxf1#
    • 1...c2
      • 2.Ra3#
  • Tries
    • 1.Qc2+?
      • 1...Ke2
        • 2.Sd4#
      • 1...Sxc2!
    • 1.Qf3+?
      • 1...Be3
        • 2.Qe4#
        • 2.Qxf1#
        • 2.Qxe3#
      • 1...Sxf3!
    • 1.Qb1+?
      • 1...Ke2
        • 2.Sd4#
      • 1...Sc2
        • 2.Qxf1#
        • 2.Qxb5#
      • 1...c2!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qxb5#
      • 1...Bg5+
        • 2.Se7#
      • 1...Ke2
        • 2.Sd4#
      • 1...b4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(a);OGATE::QAB(A),XB(b)
    • P(d);OGATEB::R(C)
  • Tries
    • Try
      • Q(A);CHECK,N_PINB(c)
      • Vars
        • K(e);P_SPINB(c),S_FLIGHT::S(D)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);CHECK,N_PINB(c)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);CHECK,N_PINB(c)
      • Vars
        • K(e);P_SPINB(c),S_FLIGHT::S(D)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • Q(A);N_PINB(c),P_PINP(d)
    • Threat
      • QAB(A),XP(g)
    • Vars
      • B(c);CHECK,S_CUTR(h)::B(F)+S(D)
      • K(e);N_SPINP(d),P_SPINB(c),S_FLIGHT::S(D)
      • P(g);N_GUARD::QAB1(A)
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