MESON Chess Problem Database

Problem Display
PID: 172066 (8/5p2/2N2p2/K1p2RpQ/P3kp2/R1p2r1q/2Nb1PP1/1B6 w - - 0 1)

Apro, Laszlo

Probleemblad, 1969

8/5p2/2N2p2/K1p2RpQ/P3kp2/R1p2r1q/2Nb1PP1/1B6

#2

10 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.S2d4#
    • 1...Qxf5
      • 2.Qxf3#
  • Tries
    • 1.Qxf3+?
      • 1...Kxf5
        • 2.S2d4#
      • 1...Qxf3!
  • Keys
    • 1.Qxf7!
      • threat
        • 2.Qd5#
      • 1...Kd3
        • 2.S2d4#
      • 1...Kxf5
        • 2.Se3#
      • 1...Qxf5
        • 2.Qc4#
      • 1...Rd3
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);P_SPINP(h),S_FLIGHT,XR(H)::B(A)+S(B),DCHECK
    • Q(d);N_GUARD,SBLOCK,XR(H)::QAB1(I),XR(c)
  • Tries
    • Try
      • Q(I);CHECK,XR(c)
      • Vars
        • K(e);P_SPINP(f),S_FLIGHT,XR(H)::B(A)+S(B),DCHECK
      • Refutation
        • Q(d);XQ(I)
  • Actual
    • Q(I);XP(j)
    • Threat
      • QAB1(I)
    • Vars
      • K(e);P_SPINP(b),S_FLIGHT::B(A)+S(B)
      • K(e);P_SPINP(i),S_FLIGHT,XR(H)::B(A)+S(B),DCHECK
      • Q(d);SBLOCK,XR(H)::QAR2(I)
      • R(c);SBLOCK::QAR2(I)
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Developed and maintained by Brian Stephenson.
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