MESON Chess Problem Database

Problem Display
PID: 234096 (1r6/6R1/2B5/3R3p/nk6/6Q1/3N4/n1b3K1 w - - 0 1)

Benko, Pal Charles

Chess Life & Review, 1976

1r6/6R1/2B5/3R3p/nk6/6Q1/3N4/n1b3K1

#2

6 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Rxb5#
    • 1...Ra8
      • 2.Rb5#
    • 1...Rc8
      • 2.Rb5#
    • 1...Rd8
      • 2.Rb5#
    • 1...Re8
      • 2.Rb5#
    • 1...Rf8
      • 2.Rb5#
    • 1...Rg8
      • 2.Rb5#
    • 1...Rh8
      • 2.Rb5#
    • 1...Sc2
      • 2.Qb3#
    • 1...Sb3
      • 2.Qxb3#
    • 1...Sc3
      • 2.Qd6#
    • 1...h4
      • 2.Rg4#
  • Tries
    • 1.Qd6+?
      • 1...Sc5
        • 2.Qxc5#
      • 1...Kc3!
  • Keys
    • 1.Ra7!
      • threat
        • 2.Rxa4#
      • 1...Rb5
        • 2.Rxb5#
      • 1...Ra8
        • 2.Rb5#
      • 1...Sb2
        • 2.Qa3#
      • 1...Sc3
        • 2.Qd6#
      • 1...Sc5
        • 2.Rd4#
      • 1...Sb6
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • R(f);N_GUARD::R1(D),XR(f)
    • R(f);N_GUARD::R1(D)
    • S(a);N_GUARD::QAR1(C)
    • S(a);N_GUARD::QAR1(C),XS(a)
    • S(c);N_GUARD,SBLOCK::QAB(C)
    • P(e);N_GUARD::R(F)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(C),XS(c)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(F);
    • Threat
      • R1(F),XS(c)
    • Vars
      • R(f);N_GUARD::R1(D),XR(f)
      • R(f);N_GUARD::R1(D)
      • S(c);S_CUTB(b)::QAB1(C)
      • S(c);N_GUARD,SBLOCK::QAB(C)
      • S(c);SBLOCK::R(D)
      • S(c);S_CUTR(f)::R1(D)
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