MESON Chess Problem Database

Problem Display
PID: 161695 (3r3B/5P2/1P2P1Q1/1Kp1N1Rn/1prkNp2/5P2/1pPp4/3B1nq1 w - - 0 1)

Apro, Laszlo

Magyar Sakkelet, 1961

3r3B/5P2/1P2P1Q1/1Kp1N1Rn/1prkNp2/5P2/1pPp4/3B1nq1

#2

12 + 11

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Sxc4#
    • 1...Kd5
      • 2.Sg4#
    • 1...Qe3
      • 2.Sc6#
    • 1...Se3
      • 2.Sc6#
  • Tries
    • 1.Sxc4+?
      • 1...Sf6
        • 2.Bxf6#
        • 2.Qxf6#
      • 1...Sg7
        • 2.Bxg7#
        • 2.Qf6#
        • 2.Qxg7#
      • 1...Rxh8!
    • 1.Sg4+?
      • 1...Sf6
        • 2.Bxf6#
        • 2.Qxf6#
      • 1...Sg7
        • 2.Bxg7#
        • 2.Qf6#
        • 2.Qxg7#
      • 1...Rxh8!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Qd3#
      • 1...Kc3
        • 2.Se2#
      • 1...Ke3
        • 2.Sg4#
      • 1...Kd5
        • 2.Sxc4#
      • 1...Qe3
        • 2.Sc6#
      • 1...Rc3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(g);S_FLIGHT::S(F),XR(f)
    • K(g);P-FLIGHT::R(G)+S(F)
    • Q(b);SBLOCK::B(L)+S(F),DCHECK
    • S(a);SBLOCK::B(L)+S(F),DCHECK
  • Tries
    • Try
      • S(F);CHECK,XR(f)
      • Refutation
        • R(k);XB(L)
    • Try
      • S(F);CHECK
      • Refutation
        • R(k);XB(L)
  • Actual
    • S(D);
    • Threat
      • QAR1(J)
    • Vars
      • K(g);S_FLIGHT::S(D)
      • K(g);S_FLIGHT::S(F)
      • K(g);P-FLIGHT::R(G)+S(F),XR(f)
      • Q(b);SBLOCK::B(L)+S(F),DCHECK
      • R(f);SBLOCK::QAR1(J)
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