MESON Chess Problem Database

Problem Display
PID: 277885 (Q7/8/3b4/2RPNK2/1P1k4/4N3/1P1prn2/4nB2 w - - 0 1)

Lacny, Ludovit

Pat a Mat, 2014

Q7/8/3b4/2RPNK2/1P1k4/4N3/1P1prn2/4nB2

#2

9 + 6

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3
      • 2.Sc6#
      • 2.Rc4#
    • 1...Sc2
      • 2.Sxc2#
    • 1...Sg2
      • 2.Sc2#
    • 1...Sed3
      • 2.Sc2#
    • 1...Sf3
      • 2.Sc2#
  • Tries
    • 1.Sc6+?
      • 1...Kd3
        • 2.Rc3#
        • 2.Qa3#
      • 1...Kxe3!
    • 1.Rc3?
      • threat
        • 2.Sc6#
      • 1...Rxe3
        • 2.Rc4#
      • 1...Bxe5
        • 2.Qa7#
      • 1...Sed3
        • 2.Sc2#
      • 1...Sfd3!
    • 1.Qa3?
      • threat
        • 2.Sc6#
        • 2.Rc4#
        • 2.Qc3#
      • 1...Rxe3
        • 2.Sc6#
      • 1...Bxc5
        • 2.Sc6#
        • 2.Qc3#
      • 1...Bxe5
        • 2.Rc4#
        • 2.Qc3#
      • 1...Sed3
        • 2.Sc2#
      • 1...d1S
        • 2.Sc6#
        • 2.Rc4#
      • 1...Sd1
        • 2.Sc6#
        • 2.Rc4#
      • 1...Se4
        • 2.Sc6#
        • 2.Rc4#
      • 1...Sfd3!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Rc4#
      • 1...Kxe3
        • 2.Rc3#
      • 1...Rxe3
        • 2.Sc6#
      • 1...Bxc5
        • 2.Qxc5#
      • 1...Bxe5
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::S(C),XS(a)
    • S(a);N_GUARD::S(C)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • K(e);S_FLIGHT,XS(C)
    • Try
      • R(E);
      • Threat
        • S(G)
      • Vars
        • R(c);SBLOCK,XS(C)::R1(E)
        • B(f);N_GUARD,XS(G)::QAB(I)
        • S(a);N_GUARD::S(C)
      • Refutation
        • S(d);
    • Try
      • Q(I);
      • Threat
        • DUALS(3)
      • Vars
        • R(c);XS(C)::S(G)
        • S(a);N_GUARD::S(C)
      • Refutation
        • S(d);
  • Actual
    • Q(I);
    • Threat
      • QAB(I)+R(E),DCHECK
    • Vars
      • K(e);S_FLIGHT,XS(C)::QAB(I)+R(E),DCHECK
      • R(c);SBLOCK,XS(C)::S(G)
      • B(f);OGATE,P_SPINB(f),XR(E)::QAB1(I),XB(f)
      • B(f);N_GUARD,XS(G)::QAB(I)+R(E)
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