MESON Chess Problem Database

Problem Display
PID: 18473 (4r3/q7/p7/6p1/1pp3Q1/3kP2R/N2bN1R1/1K6 w - - 0 1)

Wrobel, Marian

1st Prize, BCF 083. Ty., 1956-1957

4r3/q7/p7/6p1/1pp3Q1/3kP2R/N2bN1R1/1K6

#2

7 + 8

268 Chess Life 1958
3976 FIDE Album (1956-1958) 1961
56 The Problemist 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe3
      • 2.Qd4#
    • 1...Qd4
      • 2.Qxd4#
    • 1...Qb8
      • 2.Qd4#
    • 1...Qb7
      • 2.Qd4#
    • 1...Qc7
      • 2.Qd4#
    • 1...Qe7
      • 2.Qd4#
    • 1...Qf7
      • 2.Qd4#
    • 1...Qh7
      • 2.Qd4#
    • 1...Qa8
      • 2.Qd4#
    • 1...Rxe3
      • 2.Qf5#
    • 1...Ra8
      • 2.Qf5#
    • 1...Rb8
      • 2.Qf5#
    • 1...Rc8
      • 2.Qf5#
    • 1...Rd8
      • 2.Qf5#
    • 1...Rg8
      • 2.Qf5#
    • 1...Rh8
      • 2.Qf5#
    • 1...Bc1
      • 2.Sexc1#
    • 1...Be1
      • 2.Sec1#
    • 1...Bc3
      • 2.Sec1#
    • 1...Bxe3
      • 2.Sec1#
    • 1...c3
      • 2.Sxb4#
  • Keys
    • 1.Sec3!
      • threat
        • 2.Qe2#
      • 1...Qxe3
        • 2.Qd7#
      • 1...Rxe3
        • 2.Qe4#
      • 1...Bxc3
        • 2.Sc1#
      • 1...Bxe3
        • 2.Qd1#
      • 1...bxc3
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 17
  • Sets
    • Q(g);N_GUARD,P_SPINQ(g),XP(E)::QAR1(G)
    • Q(g);N_GUARD::QAR1(G),XQ(g)
    • Q(g);N_GUARD::QAR1(G)
    • R(h);N_GUARD,P_SPINR(h),XP(E)::QAB(G)
    • R(h);N_GUARD::QAB(G)
    • B(a);N_GUARD::S(C),XB(a)
    • B(a);N_GUARD::S(C)
    • B(a);N_GUARD,P_SPINB(a),XP(E)::S(C)
    • P(d);S_CUTB(a)::S(B),XP(c)
  • Actual
    • S(C);
    • Threat
      • QAB1(G)
    • Vars
      • Q(g);N_GUARD,P_SPINQ(g),XP(E)::QAR(G)
      • R(h);N_GUARD,P_SPINR(h),XP(E)::QAB1(G)
      • B(a);N_GUARD,SBLOCK,XS(C)::S(B)
      • B(a);OGATEB,P_SPINB(a),XP(E)::QAR2(G)
      • P(c);SBLOCK,XS(C)::S(B)
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