MESON Chess Problem Database

Problem Display
PID: 150299 (7b/B7/3p4/Rpq3QK/3k4/n4RN1/1P6/3n1B2 w - - 0 1)

Boswell, Edward

The Referee, 1925

(First published on Sun Jul 26 1925)

7b/B7/3p4/Rpq3QK/3k4/n4RN1/1P6/3n1B2

#2

8 + 7

15239 Valois Notebooks 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qb6
      • 2.Bxb6#
    • 1...Be5
      • 2.Qd2#
    • 1...Sc3
      • 2.bxc3#
    • 1...Se3
      • 2.Rf4#
    • 1...Sc4
      • 2.Rd3#
    • 1...d5
      • 2.Qf4#
  • Tries
    • 1.Rf5?
      • threat
        • 2.Rd5#
        • 2.Qd2#
        • 2.Qf4#
      • 1...Be5
        • 2.Qd2#
      • 1...Sf2
        • 2.Rd5#
      • 1...Sc3
        • 2.Qd2#
      • 1...Se3
        • 2.Rf4#
        • 2.Qf4#
      • 1...Sb1
        • 2.Rd5#
        • 2.Qf4#
      • 1...Sc4
        • 2.Rd5#
        • 2.Qf4#
      • 1...d5
        • 2.Rxd5#
        • 2.Qd2#
        • 2.Qf4#
      • 1...Sxb2!
    • 1.Raxa3?
      • threat
        • 2.Rf4#
      • 1...Be5
        • 2.Qd2#
      • 1...Sc3
        • 2.bxc3#
      • 1...Sf2!
  • Keys
    • 1.Ra6!
      • threat
        • 2.Rxd6#
      • 1...Be5
        • 2.Qd2#
      • 1...Qb6
        • 2.Bxb6#
      • 1...Sc3
        • 2.bxc3#
      • 1...Se3
        • 2.Rf4#
      • 1...Sc4
        • 2.Rd3#
      • 1...d5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(e);N_PINQ(F),OGATEB::B(H),XQ(e)
    • B(g);N_PINQ(F),SBLOCK::QAR2(F)
    • S(a);OGATE::P(B),XS(a)
    • S(a);SBLOCK::R(C)
    • S(b);SBLOCK::R1(C)
    • P(f);N_PINQ(F),SBLOCK::QAR2(F)
  • Tries
    • Try
      • R(C);N_SPINQ(F)
      • Threat
        • DUALS(3)
      • Vars
        • B(g);::QAR2(F)
        • S(a);::R1(C)
        • S(a);::QAR2(F)
      • Refutation
        • S(a);XP(B)
    • Try
      • R(E);XS(b)
      • Threat
        • R(C)
      • Vars
        • B(g);N_PINQ(F),SBLOCK::QAR2(F)
        • S(a);OGATE::P(B),XS(a)
      • Refutation
        • S(a);
  • Actual
    • R(E);
    • Threat
      • R(E),XP(f)
    • Vars
      • B(g);N_PINQ(F),SBLOCK::QAR2(F)
      • Q(e);N_PINQ(F),OGATEB::B(H),XQ(e)
      • S(a);OGATE::P(B),XS(a)
      • S(a);SBLOCK::R(C)
      • S(b);SBLOCK::R1(C)
      • P(f);N_PINQ(F),SBLOCK::QAR2(F)
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