MESON Chess Problem Database

Problem Display
PID: 161255 (5BB1/1Kp1p2r/5N2/3NP3/2pkpP2/3P4/3Q1P2/3n4 w - - 0 1)

Apro, Laszlo

Suomen Shakki, 1956

5BB1/1Kp1p2r/5N2/3NP3/2pkpP2/3P4/3Q1P2/3n4

#2

10 + 7

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Qe3#
    • 1...Sxf2
      • 2.Qe3#
    • 1...Sc3
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...cxd3
      • 2.Qb4#
    • 1...c5
      • 2.dxe4#
    • 1...e6
      • 2.dxe4#
  • Tries
    • 1.Qc3+?
      • 1...Kc5
        • 2.Qxc4#
      • 1...Sxc3!
  • Keys
    • 1.Sxc7!
      • threat
        • 2.Se6#
      • 1...Kc5
        • 2.d4#
      • 1...cxd3
        • 2.Qb4#
      • 1...exf6
        • 2.dxc4#
      • 1...e6
        • 2.dxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD,XP(B)::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • P(b);OGATEB,P_SPINP(b),SBLOCK,XP(C)::QAR2(A)
    • P(e);SBLOCK::QAR(A)+P(C),XP(d)
    • P(f);::QAR(A)+P(C),XP(d)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::QAR1(A),XP(b)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • S(E);XP(e)
    • Threat
      • S(E)
    • Vars
      • K(c);OGATE,P_SPINP(f),S_FLIGHT::P(C)
      • P(b);OGATEB,P_SPINP(b),SBLOCK,XP(C)::QAR2(A)
      • P(f);P_PINS(E),XS(G)::QAR(A)+P(C),XP(b)
      • P(f);P_PINS(E)::QAR(A)+P(C),XP(d)
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