MESON Chess Problem Database

Problem Display
PID: 9484 (6B1/3Rp3/3N4/n1p1k2N/6Kp/5R1p/4q2P/1n2QbB1 w - - 0 1)

Blake, Percy Francis

2nd Prize, Hampstead and Highgate Express, 1904

6B1/3Rp3/3N4/n1p1k2N/6Kp/5R1p/4q2P/1n2QbB1

#2

9 + 9

15 British Chess Magazine 1905

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe1
      • 2.Rf5#
    • 1...Qe3
      • 2.Qxe3#
    • 1...Qe4+
      • 2.Qxe4#
    • 1...Bg2
      • 2.Qxe2#
    • 1...Sd2
      • 2.Qa1#
    • 1...Sa3
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...c4
      • 2.Qxa5#
    • 1...exd6
      • 2.Re7#
  • Tries
    • 1.Kg5?
      • threat
        • 2.Rf5#
      • 1...Qe3+
        • 2.Qxe3#
      • 1...exd6
        • 2.Re7#
      • 1...e6!
    • 1.Sf6?
      • 1...Qe4+
        • 2.Qxe4#
      • 1...Qxe1
        • 2.Rf5#
      • 1...exd6
        • 2.Re7#
      • 1...Qe3
        • 2.Qxe3#
      • 1...Bg2
        • 2.Qxe2#
      • 1...Sd2
        • 2.Qa1#
      • 1...Sa3
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb3
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sc6
        • 2.Sc4#
      • 1...Sb7
        • 2.Sc4#
      • 1...c4
        • 2.Qxa5#
      • 1...e6
        • 2.Sf7#
      • 1...exf6!
    • 1.Sc4+?
      • 1...Ke4
        • 2.Bd5#
        • 2.Bh7#
        • 2.Rxe7#
      • 1...Sxc4!
    • 1.Sf7+?
      • 1...Ke4
        • 2.Bh7#
      • 1...Ke6!
  • Keys
    • 1.Sg3!
      • 1...Qe4+
        • 2.Qxe4#
      • 1...Qxe1
        • 2.Rf5#
      • 1...hxg3
        • 2.Qxg3#
      • 1...exd6
        • 2.Re7#
      • 1...Qe3
        • 2.Qxe3#
      • 1...e6
        • 2.Sf7#
      • 1...Bg2
        • 2.Qxe2#
      • 1...Sd2
        • 2.Qa1#
      • 1...Sa3
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sb3
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sc6
        • 2.Sc4#
      • 1...Sb7
        • 2.Sc4#
      • 1...c4
        • 2.Qxa5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(c);N_PINR(D),N_SPINQ(c),XQ(A)::R1(D)
    • Q(c);N_PINR(D),OGATE::QAR2(A),XQ(c)
    • Q(c);CHECK,N_PINR(D),OGATE::QAR1(A),XQ(c)
    • B(b);N_GUARD::QAR(A),XQ(c)
    • S(a);OGATE::QAB(A)
    • S(a);N_GUARD::QAB(A)
    • S(a);N_GUARD::QAB(A),XS(a)
    • P(g);OGATEB::QAR(A),XS(f)
    • P(i);SBLOCK,XS(G)::R(H)
  • Tries
    • Try
      • K(E);N_SPINR(D),P-FLIGHT
      • Threat
        • R1(D)
      • Vars
        • Q(c);CHECK,OGATE::QAR2(A),XQ(c)
        • P(i);SBLOCK,XS(G)::R(H)
      • Refutation
        • P(i);
    • Try
      • S(F);
      • Vars
        • Q(c);CHECK,N_PINR(D),OGATE::QAR1(A),XQ(c)
        • Q(c);N_PINR(D),N_SPINQ(c),XQ(A)::R1(D)
        • P(i);SBLOCK,XS(G)::R(H)
        • Q(c);N_PINR(D),OGATE::QAR2(A),XQ(c)
        • B(b);N_GUARD::QAR(A),XQ(c)
        • S(a);OGATE::QAB(A)
        • S(a);N_GUARD::QAB(A)
        • S(a);N_GUARD::QAB(A),XS(a)
        • S(f);N_GUARD::S(G)
        • S(f);N_GUARD::S(G),XS(f)
        • P(g);OGATEB::QAR(A),XS(f)
        • P(i);SBLOCK::S(G)
      • Refutation
        • P(i);XS(F)
    • Try
      • S(G);CHECK
      • Refutation
        • S(f);XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • K(h);P-FLIGHT::B(I)
      • Refutation
        • K(h);P-FLIGHT
  • Actual
    • S(F);
    • Vars
      • Q(c);CHECK,N_PINR(D),OGATE::QAR1(A),XQ(c)
      • Q(c);N_PINR(D),N_SPINQ(c),XQ(A)::R1(D)
      • P(e);OGATE,XS(F)::QAB(A),XP(e)
      • P(i);SBLOCK,XS(G)::R(H)
      • Q(c);N_PINR(D),OGATE::QAR2(A),XQ(c)
      • P(i);SBLOCK::S(G)
      • B(b);N_GUARD::QAR(A),XQ(c)
      • S(a);OGATE::QAB(A)
      • S(a);N_GUARD::QAB(A)
      • S(a);N_GUARD::QAB(A),XS(a)
      • S(f);N_GUARD::S(G)
      • S(f);N_GUARD::S(G),XS(f)
      • P(g);OGATEB::QAR(A),XS(f)
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