MESON Chess Problem Database

Problem Display
PID: 261331 (1R4K1/n5Pp/3N3R/p1kPQ1n1/P1B5/P5B1/1pq5/2N3b1 w - - 0 1)

Baumann, Hannes

Neue Zurcher Zeitung, 1987

1R4K1/n5Pp/3N3R/p1kPQ1n1/P1B5/P5B1/1pq5/2N3b1

#2

12 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sb3#
    • 1...Qb3
      • 2.Sxb3#
    • 1...Qd3
      • 2.Sxd3#
    • 1...Qxa4
      • 2.Sd3#
    • 1...Qe4
      • 2.Sb3#
    • 1...Qf5
      • 2.Sb3#
    • 1...Qg6
      • 2.Sb3#
    • 1...Qd2
      • 2.Sb3#
    • 1...Qe2
      • 2.Sb3#
    • 1...Qf2
      • 2.Sb3#
      • 2.Sd3#
    • 1...Qg2
      • 2.Sb3#
      • 2.Sd3#
    • 1...Qh2
      • 2.Sb3#
      • 2.Sd3#
    • 1...Qxc4
      • 2.Sb7#
    • 1...Bh2
      • 2.Qe3#
    • 1...Be3
      • 2.Qxe3#
    • 1...Sb5
      • 2.Rxb5#
    • 1...Sc6
      • 2.Rb5#
    • 1...Sc8
      • 2.Rb5#
  • Tries
    • 1.Bf2+?
      • 1...Qxf2
        • 2.Sb3#
        • 2.Sd3#
      • 1...Bxf2!
    • 1.Bb3?
      • threat
        • 2.Sb7#
      • 1...Qxb3
        • 2.Sxb3#
      • 1...Qg6
        • 2.Qc3#
      • 1...Sc6
        • 2.Rb5#
      • 1...Se6!
  • Keys
    • 1.Bb5!
      • threat
        • 2.Sb7#
      • 1...Qxa4
        • 2.Sd3#
      • 1...Sxb5
        • 2.Rxb5#
      • 1...Qg6
        • 2.Sb3#
      • 1...Se6
        • 2.dxe6#
      • 1...Sc6
        • 2.dxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 11
  • Sets
    • Q(c);N_GUARD::S(A)
    • Q(c);N_GUARD::S(A),XQ(c)
    • Q(c);N_GUARD,XP(D)::S(A)
    • Q(c);N_GUARD,P_PINP(J)::S(A)
    • Q(c);P_PINP(F),SBLOCK,XB(E)::S(H)
    • B(a);N_GUARD::QAB(G)
    • B(a);N_GUARD::QAB(G),XB(a)
    • S(g);N_GUARD::R1(K),XS(g)
    • S(g);N_GUARD::R1(K)
  • Tries
    • Try
      • B(C);CHECK
      • Refutation
        • B(a);XB(C)
    • Try
      • B(E);
      • Threat
        • S(H)
      • Vars
        • Q(c);P_PINP(F),XB(E)::S(A),XQ(c)
        • Q(c);N_GUARD,P_PINP(J)::QAR2(G)
        • S(g);N_GUARD::R1(K)
      • Refutation
        • S(f);
  • Actual
    • B(E);
    • Threat
      • S(H)
    • Vars
      • Q(c);N_GUARD,XP(D)::S(A)
      • S(g);OGATE,XB(E)::R1(K),XS(g)
      • Q(c);N_GUARD,P_PINP(J)::S(A)
      • S(f);OGATE::QAR(G)+P(F),XS(f)
      • S(g);OGATE::QAR(G)+P(F),XS(g)
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