MESON Chess Problem Database

Problem Display
PID: 271635 (B2Nn3/1R2p3/3k1n1r/4NR1b/1PK5/8/4p1p1/8 w - - 0 1)

Mannion, R

Sunday Referee, 1933

(First published on Sun Jul 30 1933)

B2Nn3/1R2p3/3k1n1r/4NR1b/1PK5/8/4p1p1/8

#2

7 + 8

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rg6
      • 2.Sef7#
    • 1...Bf3
      • 2.Sef7#
    • 1...Bg4
      • 2.Sef7#
    • 1...Bf7+
      • 2.Sexf7#
    • 1...Se4
      • 2.Rd7#
    • 1...Sg4
      • 2.Rd7#
    • 1...Sd5
      • 2.Rd7#
    • 1...Sd7
      • 2.Rxd7#
    • 1...Sh7
      • 2.Rd7#
    • 1...Sg8
      • 2.Rd7#
    • 1...Sc7
      • 2.Rb6#
  • Tries
    • 1.Kd3?
      • threat
        • 2.Sc4#
      • 1...Kd5
        • 2.Rb6#
        • 2.Rd7#
      • 1...Bf7
        • 2.Sexf7#
      • 1...Sc7
        • 2.Rb6#
      • 1...e1S+!
    • 1.Kb5?
      • threat
        • 2.Sc4#
      • 1...Kd5
        • 2.Rd7#
      • 1...Bf7
        • 2.Sexf7#
      • 1...Sc7+!
    • 1.Rxh5?
      • threat
        • 2.Sef7#
      • 1...Sc7
        • 2.Rb6#
      • 1...Rh7!
  • Keys
    • 1.Kb3!
      • threat
        • 2.Sc4#
      • 1...Bf7+
        • 2.Sexf7#
      • 1...Kd5
        • 2.Rd7#
      • 1...Sc7
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • R(f);S_CUTB(c)::S(C)
    • B(c);N_GUARD::S(C)
    • B(c);CHECK,N_GUARD::S(C),XB(c)
    • S(e);N_GUARD::R1(E)
    • S(e);N_GUARD::R1(E),XS(e)
    • S(h);SBLOCK::R(E)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • S(C)
      • Vars
        • B(c);N_GUARD::S(C),XB(c)
        • S(h);SBLOCK::R(E)
      • Refutation
        • P(a);CHECK
    • Try
      • K(B);S_FLIGHT
      • Threat
        • S(C)
      • Vars
        • K(d);P-FLIGHT::B(F)+R(E),DCHECK
        • B(c);N_GUARD::S(C),XB(c)
      • Refutation
        • S(h);CHECK
    • Try
      • R(D);XB(c)
      • Threat
        • S(C)
      • Vars
        • S(h);SBLOCK::R(E)
      • Refutation
        • R(f);
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • S(C)
    • Vars
      • B(c);CHECK,N_GUARD::S(C),XB(c)
      • K(d);P-FLIGHT::B(F)+R(E),DCHECK
      • S(h);SBLOCK::R(E)
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