MESON Chess Problem Database

Problem Display
PID: 153190 (8/N2p3p/P2kn2R/1R1Np3/1pP5/1n2KP2/1Q6/8 w - - 0 1)

Blaine, Harry (Harley, Brian)

Morning Post, 1937

(First published on Sat Aug 28 1937)

8/N2p3p/P2kn2R/1R1Np3/1pP5/1n2KP2/1Q6/8

#2

9 + 7

15290 Harley Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Qxb4#
    • 1...Sc1
      • 2.Qxb4#
    • 1...Sd2
      • 2.Qxb4#
    • 1...Sd4
      • 2.Qxb4#
    • 1...Sa5
      • 2.Qxb4#
    • 1...Sc5
      • 2.Rb6#
    • 1...e4
      • 2.Qh2#
  • Tries
    • 1.Kf2?
      • 1...Sa1
        • 2.Qxb4#
      • 1...Sc1
        • 2.Qxb4#
      • 1...Sd2
        • 2.Qxb4#
      • 1...Sd4
        • 2.Qxb4#
      • 1...Sa5
        • 2.Qxb4#
      • 1...Sc5
        • 2.Rb6#
      • 1...e4!
    • 1.Ra5?
      • 1...Sxa5
        • 2.Qxb4#
      • 1...Sa1
        • 2.Qxb4#
      • 1...Sc1
        • 2.Qxb4#
      • 1...Sd2
        • 2.Qxb4#
      • 1...Sd4
        • 2.Qxb4#
      • 1...e4
        • 2.Qh2#
      • 1...Sc5!
    • 1.Qb1?
      • 1...Sa1
        • 2.Qxb4#
      • 1...Sc1
        • 2.Qxb4#
      • 1...Sd2
        • 2.Qxb4#
      • 1...Sd4
        • 2.Qxb4#
      • 1...Sa5
        • 2.Qxb4#
      • 1...Sc5
        • 2.Rb6#
      • 1...e4!
    • 1.Qd2?
      • 1...e4
        • 2.Qh2#
      • 1...Sa1
        • 2.Qxb4#
        • 2.c5#
      • 1...Sc1
        • 2.Qxb4#
        • 2.c5#
      • 1...Sd4
        • 2.Qxb4#
      • 1...Sa5
        • 2.Qxb4#
        • 2.c5#
      • 1...Sc5
        • 2.Rb6#
      • 1...Sxd2!
    • 1.f4?
      • threat
        • 2.Qxe5#
        • 2.fxe5#
      • 1...Sd4
        • 2.Qxb4#
      • 1...e4
        • 2.Qe5#
      • 1...exf4+!
    • 1.c5+?
      • 1...Kxd5
        • 2.Qxb3#
      • 1...Sxc5!
  • Keys
    • 1.Qa2!
      • 1...e4
        • 2.Qh2#
      • 1...Sa1
        • 2.c5#
      • 1...Sc1
        • 2.c5#
      • 1...Sd2
        • 2.c5#
      • 1...Sd4
        • 2.c5#
      • 1...Sa5
        • 2.c5#
      • 1...Sc5
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 5
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::QAB(A),XP(b)
    • S(a);SBLOCK::R(E)
    • P(c);OGATEB::QAB(A)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • S(a);OGATE::QAB(A),XP(b)
        • S(a);SBLOCK::R(E)
      • Refutation
        • P(c);
    • Try
      • R(E);
      • Vars
        • S(a);OGATE,XR(E)::QAB(A),XP(b)
        • S(a);OGATE::QAB(A),XP(b)
        • P(c);OGATEB::QAB(A)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Vars
        • S(a);OGATE::QAB(A),XP(b)
        • S(a);SBLOCK::R(E)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Vars
        • P(c);OGATEB::QAB(A)
        • S(a);N_GUARD::QAB(A),XP(b)
        • S(a);SBLOCK::R(E)
      • Refutation
        • S(a);XQ(A)
    • Try
      • P(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);OGATE::QAB(A),XP(b)
        • P(c);::QAB1(A)
      • Refutation
        • P(c);CHECK,XP(C)
    • Try
      • P(D);CHECK
      • Vars
        • K(d);N_SPINS(e),P-FLIGHT,XS(F)::QAB(A),XS(a)
      • Refutation
        • S(a);XP(D)
  • Actual
    • Q(A);
    • Vars
      • P(c);OGATEB::QAB(A)
      • S(a);N_GUARD::P(D)
      • S(a);SBLOCK::R(E)
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