MESON Chess Problem Database

Problem Display
PID: 243726 (6B1/rQ4bK/2R3rp/2B1k1pP/5npn/3PN1P1/8/1q6 w - - 0 1)

Beck, Friedrich

Nepszava, 1940

6B1/rQ4bK/2R3rp/2B1k1pP/5npn/3PN1P1/8/1q6

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Qb2#
    • 1...Qf1
      • 2.Qb2#
    • 1...Qg1
      • 2.Qb2#
    • 1...Qh1
      • 2.Qb2#
    • 1...Qb2
      • 2.Qxb2#
    • 1...Sf5
      • 2.Sc4#
      • 2.Sxg4#
  • Tries
    • 1.Qc7+?
      • 1...Rd6
        • 2.Qxd6#
      • 1...Rxc7!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Sxg4#
      • 1...Kxf6
        • 2.Bd4#
      • 1...Rxf6
        • 2.Qe4#
      • 1...Bxf6
        • 2.d4#
      • 1...Qd1
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD::QAB(G)
    • Q(a);N_GUARD::QAB(G),XQ(a)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • R(g);N_GUARD,P_PINP(A),P_SPINR(g)::QAB1(G),XR(g)
      • Refutation
        • R(i);XQ(G)
  • Actual
    • R(F);
    • Threat
      • S(B),XP(c)
    • Vars
      • K(e);S_FLIGHT,XR(F)::B(D)
      • R(g);P_PINP(A),SBLOCK,XR(F)::QAR1(G)
      • B(j);P_PINQ(G),SBLOCK,XR(F)::P(A)
      • Q(a);N_GUARD::QAB(G)
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