MESON Chess Problem Database

Problem Display
PID: 53094 (k6q/2RN4/8/3p4/2B4r/5nBQ/7p/bR1rnN1K w - - 0 1)

Bata, Lorinc

Problem (Zagreb), 1953

k6q/2RN4/8/3p4/2B4r/5nBQ/7p/bR1rnN1K

#2

8 + 9

268 Chess Life 1954

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Rb8#
    • 1...Qd4
      • 2.Rb8#
    • 1...Qe5
      • 2.Rb8#
    • 1...Qf6
      • 2.Rb8#
    • 1...Qg7
      • 2.Rb8#
    • 1...Qh5
      • 2.Rb8#
    • 1...Qh6
      • 2.Rb8#
    • 1...Qh7
      • 2.Rb8#
    • 1...Qb8
      • 2.Rxb8#
    • 1...Rdd4
      • 2.Rxa1#
    • 1...Rhd4
      • 2.Qxh8#
    • 1...Bd4
      • 2.Bxd5#
    • 1...Sd3
      • 2.Bxd5#
    • 1...Sd2
      • 2.Bxd5#
    • 1...d4
      • 2.Bd5#
  • Tries
    • 1.Rxa1+?
      • 1...Rxa1
        • 2.Bxd5#
      • 1...Qxa1!
    • 1.Rbb7?
      • threat
        • 2.Sb6#
        • 2.Ra7#
      • 1...Qb2
        • 2.Ra7#
      • 1...Qd4
        • 2.Rb8#
      • 1...Qf6
        • 2.Ra7#
        • 2.Rb8#
      • 1...Qh6
        • 2.Ra7#
        • 2.Rb8#
      • 1...Qb8
        • 2.Sb6#
        • 2.Rxb8#
      • 1...Rb1
        • 2.Ra7#
      • 1...Rh6
        • 2.Ra7#
      • 1...Bd4!
  • Keys
    • 1.Bf2!
      • threat
        • 2.Ra7#
      • 1...Qd4
        • 2.Rb8#
      • 1...Qb8
        • 2.Rxb8#
      • 1...Rdd4
        • 2.Rxa1#
      • 1...Rhd4
        • 2.Qxh8#
      • 1...Bd4
        • 2.Bxd5#
      • 1...Sd4
        • 2.Qa3#
      • 1...d4
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(i);N_GUARD::R1(A)
    • Q(i);N_GUARD,SBLOCK::R1(A)
    • Q(i);N_GUARD::R1(A),XQ(i)
    • R(b);N_GUARD,S_CUTQ(i)::R(A),XB(a)
    • R(f);OGATE::QAB1(E),XQ(i)
    • B(a);S_CUTR(b)::B(F),XP(g)
    • S(c);P_PINS(B),S_CUTR(b)::B(F),XP(g)
    • S(e);S_CUTR(b)::B(F),XP(g)
    • P(g);S_CUTR(b)::B(F)
  • Tries
    • Try
      • R(A);CHECK,XB(a)
      • Vars
        • R(b);XR(A)::B(F),XP(g)
      • Refutation
        • Q(i);XR(A)
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(i);::R1(A)
        • Q(i);N_GUARD::R1(A)
        • R(b);::R1(A)
        • R(f);::R1(A)
      • Refutation
        • B(a);
  • Actual
    • B(D);
    • Threat
      • R1(G)
    • Vars
      • Q(i);N_GUARD::R1(A)
      • Q(i);N_GUARD::R1(A),XQ(i)
      • R(b);N_GUARD,S_CUTQ(i)::R(A),XB(a)
      • R(f);OGATE::QAB1(E),XQ(i)
      • B(a);S_CUTR(b)::B(F),XP(g)
      • S(e);OGATE::QAR(E)
      • P(g);S_CUTR(b)::B(F)
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