MESON Chess Problem Database

Problem Display
PID: 267456 (8/8/4N3/4n2p/7B/1pKpkP1n/1P1Np3/1Q6 w - - 0 1)

Neale, Harry R

Stevenson, Edward

Sunday Referee, 1938

(First published on Sun Dec 25 1938)

8/8/4N3/4n2p/7B/1pKpkP1n/1P1Np3/1Q6

#2

7 + 7

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sg1
      • 2.Qxg1#
    • 1...Sf2
      • 2.Bg5#
    • 1...Sf4
      • 2.Qg1#
    • 1...Sg5
      • 2.Qg1#
    • 1...Sxf3
      • 2.Qxd3#
    • 1...Sc4
      • 2.Qxd3#
    • 1...Sg4
      • 2.Qxd3#
    • 1...Sc6
      • 2.Qxd3#
    • 1...Sg6
      • 2.Qxd3#
    • 1...Sd7
      • 2.Qxd3#
    • 1...Sf7
      • 2.Qxd3#
    • 1...e1Q
      • 2.Qxe1#
    • 1...e1S
      • 2.Qxe1#
    • 1...e1B
      • 2.Qxe1#
    • 1...e1R
      • 2.Qxe1#
  • Tries
    • 1.Sc4+?
      • 1...Sxc4
        • 2.Qxd3#
      • 1...Kxf3!
    • 1.Bg3?
      • 1...Sxf3
        • 2.Qxd3#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...Sg1
        • 2.Qxg1#
      • 1...Sf2
        • 2.Bf4#
      • 1...Sf4
        • 2.Qg1#
      • 1...Sg5
        • 2.Qg1#
      • 1...Sc4
        • 2.Qxd3#
      • 1...Sg4
        • 2.Qxd3#
      • 1...Sc6
        • 2.Qxd3#
      • 1...Sg6
        • 2.Qxd3#
      • 1...Sd7
        • 2.Qxd3#
      • 1...Sf7
        • 2.Qxd3#
      • 1...h4!
    • 1.Bg5+?
      • 1...Sf4
        • 2.Qg1#
      • 1...Sxg5
        • 2.Qg1#
      • 1...Kf2!
    • 1.Qg1+?
      • 1...Sf2
        • 2.Bxf2#
        • 2.Bg5#
        • 2.Qxf2#
        • 2.Qg5#
      • 1...Sxg1!
    • 1.f4?
      • 1...Sxf4
        • 2.Qg1#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...Sc4
        • 2.Qxd3#
      • 1...Sg1
        • 2.Qxg1#
      • 1...Sg5
        • 2.Qg1#
      • 1...Sf3
        • 2.Qxd3#
      • 1...Sg4
        • 2.Qxd3#
      • 1...Sc6
        • 2.Qxd3#
      • 1...Sg6
        • 2.Qxd3#
      • 1...Sd7
        • 2.Qxd3#
      • 1...Sf7
        • 2.Qxd3#
      • 1...Sf2!
  • Keys
    • 1.Qh1!
      • 1...Sxf3
        • 2.Qxf3#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sg1
        • 2.Qxg1#
      • 1...Sf2
        • 2.Bg5#
      • 1...Sf4
        • 2.Qg1#
      • 1...Sg5
        • 2.Qg1#
      • 1...Sg4
        • 2.Sc4#
      • 1...Sc6
        • 2.Sc4#
      • 1...Sg6
        • 2.Sc4#
      • 1...Sd7
        • 2.Sc4#
      • 1...Sf7
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 7
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD::QAB(A),XS(e)
    • S(e);N_GUARD,SBLOCK::B(F)
    • S(e);N_GUARD::QAB(A)
    • S(f);N_GUARD,XP(E)::QAR1(A),XP(c)
    • S(f);N_GUARD::QAR1(A),XP(c)
    • P(a);OGATEB,P_PINS(C)::QAR2(A),XQ(a)
    • P(a);OGATEB::QAR2(A),XS(a)
    • P(a);OGATEB,P_PINS(C)::QAR2(A),XB(a)
    • P(a);OGATEB::QAR2(A),XR(a)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • S(f);XS(C)::QAR1(A),XP(c)
      • Refutation
        • K(d);P-FLIGHT,XP(E)
    • Try
      • B(F);
      • Vars
        • S(f);N_GUARD,XP(E)::QAR1(A),XP(c)
        • P(a);OGATEB,P_PINS(C)::QAR2(A),XQ(a)
        • P(a);OGATEB::QAR2(A),XS(a)
        • P(a);OGATEB,P_PINS(C)::QAR2(A),XB(a)
        • P(a);OGATEB::QAR2(A),XR(a)
        • S(e);N_GUARD::QAB(A),XS(e)
        • S(e);N_GUARD,SBLOCK::B(F)
        • S(e);N_GUARD::QAB(A)
        • S(f);N_GUARD::QAR1(A),XP(c)
      • Refutation
        • P(g);
    • Try
      • B(F);CHECK
      • Vars
        • S(e);P_SPINS(e)::QAB(A)
        • S(e);XB(F)::QAB(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • S(e);XQ(A)
    • Try
      • P(E);
      • Vars
        • S(e);N_GUARD,XP(E)::QAB(A)
        • P(a);OGATEB,P_PINS(C)::QAR2(A),XQ(a)
        • P(a);OGATEB::QAR2(A),XS(a)
        • P(a);OGATEB,P_PINS(C)::QAR2(A),XB(a)
        • P(a);OGATEB::QAR2(A),XR(a)
        • S(f);N_GUARD::QAR1(A),XP(c)
        • S(e);N_GUARD::QAB(A),XS(e)
        • S(e);N_GUARD::QAB(A)
      • Refutation
        • S(e);
  • Actual
    • Q(A);
    • Vars
      • S(f);OGATE,XP(E)::QAR1(A),XS(f)
      • P(a);OGATEB,P_PINS(C)::QAR2(A),XQ(a)
      • P(a);OGATEB::QAR2(A),XS(a)
      • P(a);OGATEB,P_PINS(C)::QAR2(A),XB(a)
      • P(a);OGATEB::QAR2(A),XR(a)
      • S(f);N_GUARD::S(C),XS(f)
      • S(e);N_GUARD::QAB(A),XS(e)
      • S(e);N_GUARD,SBLOCK::B(F)
      • S(e);N_GUARD::QAB(A)
      • S(f);N_GUARD::S(C)
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