MESON Chess Problem Database

Problem Display
PID: 276802 (2rbBN2/R1Ppp2n/1Nk1p2Q/Bpn1P3/4p3/8/K2R4/8 w - - 0 1)

Lacny, Ludovit

1st HM., Pat a Mat, 2007

2rbBN2/R1Ppp2n/1Nk1p2Q/Bpn1P3/4p3/8/K2R4/8

#2

10 + 10

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Rb8
      • 2.cxb8S#
  • Tries
    • 1.Sbxd7?
      • threat
        • 2.Sb8#
      • 1...Sd3
        • 2.Qxe6#
      • 1...Rb8
        • 2.Sxb8#
        • 2.cxb8S#
      • 1...Sb3
        • 2.Qxe6#
      • 1...Sa4
        • 2.Qxe6#
      • 1...Sa6
        • 2.Qxe6#
      • 1...Sb7
        • 2.Ra6#
      • 1...Sxd7!
    • 1.Sfxd7?
      • threat
        • 2.Sb8#
      • 1...Sxd7
        • 2.Rc2#
      • 1...Rb8
        • 2.Sxb8#
        • 2.cxb8S#
      • 1...Sb3
        • 2.Qxe6#
      • 1...Sd3
        • 2.Qxe6#
      • 1...Sa4
        • 2.Qxe6#
      • 1...Sa6
        • 2.Qxe6#
      • 1...Sb7!
    • 1.Rxd7?
      • threat
        • 2.Rd6#
      • 1...Sxd7
        • 2.Qc1#
      • 1...Sb3
        • 2.Rd5#
      • 1...Sd3
        • 2.Rd5#
      • 1...Sa4
        • 2.Rd5#
      • 1...Sa6
        • 2.Rd5#
      • 1...Sb7!
  • Keys
    • 1.Sxe6!
      • threat
        • 2.Sd4#
        • 2.Sxd8#
      • 1...Bxc7
        • 2.Sd4#
        • 2.Sd8#
      • 1...Sxe6
        • 2.Rc2#
      • 1...b4
        • 2.Sd4#
      • 1...Sb3
        • 2.Bxd7#
      • 1...Sd3
        • 2.Bxd7#
      • 1...Sa4
        • 2.Bxd7#
      • 1...Sa6
        • 2.Bxd7#
      • 1...Sb7
        • 2.Bxd7#
      • 1...Sf6
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • R(i);OGATE::PXR(i)=S
  • Tries
    • Try
      • S(E);XP(f)
      • Threat
        • B(I)+S(E),DCHECK
      • Vars
        • S(c);N_GUARD::QAR2(F),XP(e)
        • S(c);N_GUARD,SBLOCK::R(G)
      • Refutation
        • S(c);P_SPINS(c),XS(E)
    • Try
      • S(J);XP(f)
      • Threat
        • B(I)+S(J),DCHECK
      • Vars
        • S(c);OGATEB,P_SPINS(c),XS(J)::R(B)
        • S(c);N_GUARD::QAR2(F),XP(e)
      • Refutation
        • S(c);
    • Try
      • R(B);XP(f)
      • Threat
        • B(I)+R(B),DCHECK
      • Vars
        • S(c);OGATEB,P_SPINS(c),XR(B)::QAR(F)
        • S(c);N_GUARD::B(I)+R(B)
      • Refutation
        • S(c);
  • Actual
    • S(J);P_PINP(f),XP(e)
    • Threat
      • DUALS(2)
    • Vars
      • S(c);OGATEB,P_SPINS(c),XS(J)::R(B)
      • P(b);::QAR(F)+S(J),DCHECK
      • S(c);N_GUARD::B(I),XP(f)
      • S(h);::S(J)
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