MESON Chess Problem Database

Problem Display
PID: 254673 (NrqnN3/5p2/1p2pP2/1p1k3r/p2B4/6np/1PQ5/KBRRb3 w - - 0 1)

Burda, Josef

idee & form, 2017

NrqnN3/5p2/1p2pP2/1p1k3r/p2B4/6np/1PQ5/KBRRb3

#2

10 + 13

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qa6
      • 2.Sac7#
      • 2.Ba2#
    • 1...Qb7
      • 2.Ba2#
    • 1...Qd7
      • 2.Ba2#
    • 1...Qc7
      • 2.Saxc7#
    • 1...Sf1
      • 2.Qe4#
    • 1...Sh1
      • 2.Qe4#
    • 1...Se2
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sf5
      • 2.Qe4#
    • 1...Sc6
      • 2.Ba2#
    • 1...Sb7
      • 2.Sxb6#
  • Tries
    • 1.Qg2+?
      • 1...Se4
        • 2.Bxe4#
        • 2.Qxe4#
      • 1...hxg2!
    • 1.Qxc8?
      • threat
        • 2.Sac7#
        • 2.Qd7#
      • 1...Rxa8
        • 2.Qd7#
      • 1...Rxc8
        • 2.Sxb6#
      • 1...Bd2
        • 2.Qd7#
      • 1...Bc3
        • 2.Bxc3#
      • 1...Bb4
        • 2.Sac7#
        • 2.Bc3#
      • 1...Se4
        • 2.Sac7#
        • 2.Ba2#
      • 1...Sf5
        • 2.Sac7#
      • 1...Sb7
        • 2.Sxb6#
        • 2.Sac7#
        • 2.Qc6#
      • 1...Rb7!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qd6#
      • 1...Qxc7
        • 2.Saxc7#
      • 1...Qd7
        • 2.Qxd7#
      • 1...Bc3
        • 2.Bxc3#
      • 1...Bb4
        • 2.Bc3#
      • 1...Se4
        • 2.Ba2#
      • 1...Sf5
        • 2.Qe5#
      • 1...Sb7
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(l);N_GUARD::B(B)
    • Q(l);N_GUARD::S(I),XQ(l)
    • S(b);N_GUARD::QAB1(F)
    • S(b);N_GUARD::QAB1(F),XS(b)
    • S(m);S_CUTQ(l)::B(B)
    • S(m);S_CUTR(k)::S(I),XP(h)
  • Tries
    • Try
      • Q(F);CHECK
      • Refutation
        • P(c);XQ(F)
    • Try
      • Q(F);XQ(l)
      • Threat
        • DUALS(2)
      • Vars
        • R(k);XS(I)::QAR2(F)
        • R(k);N_GUARD,XQ(F)::S(I),XP(h)
        • B(a);::QAR2(F)
        • B(a);N_GUARD,P_PINP(E)::R(D)+B(G),XB(a)
        • S(b);::S(I)
      • Refutation
        • R(k);
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • Q(l);XQ(F)::S(I),XQ(l)
      • Q(l);N_GUARD::QAR2(F),XQ(l)
      • B(a);N_GUARD,P_PINP(E)::R(D)+B(G),XB(a)
      • B(a);N_GUARD::R(D)+B(G)
      • S(b);SBLOCK::B(B)
      • S(b);S_CUTR(g)::QAR1(F)
      • S(m);S_CUTR(k)::S(I),XP(h)
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