MESON Chess Problem Database

Problem Display
PID: 206577 (8/8/8/2Qp1p2/1p3Pp1/1P1k1pP1/3P1K2/5N2 w - - 0 1)

Beck, Gyula

Magyar Sakkvilag, 1925

8/8/8/2Qp1p2/1p3Pp1/1P1k1pP1/3P1K2/5N2

#2

7 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qe3#
    • 1...d4
      • 2.Qxf5#
  • Tries
    • 1.Ke1?
      • 1...Ke4
        • 2.Qe3#
      • 1...d4
        • 2.Qxf5#
      • 1...f2+!
    • 1.Qc3+?
      • 1...Ke4
        • 2.Qe3#
        • 2.d3#
      • 1...bxc3!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qxd5#
      • 1...Kxd2
        • 2.Qc2#
      • 1...Ke4
        • 2.Qxd5#
      • 1...d4
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(G)
    • P(e);OGATE,SBLOCK::QAB(G),XP(f)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(G)
        • P(e);OGATE,SBLOCK::QAB(G),XP(f)
      • Refutation
        • P(b);CHECK
    • Try
      • Q(G);CHECK
      • Refutation
        • P(c);XQ(G)
  • Actual
    • S(A);
    • Threat
      • QAR2(G),XP(e)
    • Vars
      • K(a);P-FLIGHT,XP(B)::QAR1(G)
      • K(a);S_FLIGHT::QAB1(G),XP(e)
      • P(e);SBLOCK::QAB1(G)
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