MESON Chess Problem Database

Problem Display
PID: 220468 (4KR2/3BpN2/p3r1p1/Rb3k1p/4p1Nb/4P1p1/6Q1/8 w - - 0 1)

Boswell, Edward

British Chess Magazine, 1925

4KR2/3BpN2/p3r1p1/Rb3k1p/4p1Nb/4P1p1/6Q1/8

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bg5
      • 2.Sfh6#
    • 1...Bf6
      • 2.Sgh6#
    • 1...hxg4
      • 2.Qf1#
    • 1...g5
      • 2.Sfe5#
  • Tries
    • 1.Rxb5+?
      • 1...Kxg4
        • 2.Sh6#
        • 2.Bxe6#
      • 1...axb5!
    • 1.Qh3?
      • 1...hxg4
        • 2.Qf1#
      • 1...g5
        • 2.Sfe5#
        • 2.Sh8#
      • 1...Bg5
        • 2.Sd6#
        • 2.Sfh6#
      • 1...Bf6
        • 2.Sf2#
        • 2.Sh2#
        • 2.Sge5#
        • 2.Sgh6#
      • 1...g2!
    • 1.Qb2?
      • threat
        • 2.Sgh6#
      • 1...hxg4
        • 2.Qe5#
      • 1...g5
        • 2.Sfe5#
      • 1...Bg5
        • 2.Sfh6#
      • 1...Kxg4!
    • 1.Qe2?
      • 1...hxg4
        • 2.Qf1#
      • 1...g5
        • 2.Sfe5#
        • 2.Sh8#
      • 1...Bg5
        • 2.Sd6#
        • 2.Sfh6#
      • 1...Bf6
        • 2.Sgh6#
      • 1...g2!
    • 1.Qxg3?
      • threat
        • 2.Qf4#
      • 1...g5
        • 2.Sfe5#
        • 2.Sh8#
      • 1...Bg5
        • 2.Sd6#
        • 2.Sfh6#
      • 1...Bxg3!
  • Keys
    • 1.Kd8!
      • 1...Kxg4
        • 2.Bxe6#
      • 1...hxg4
        • 2.Qf1#
      • 1...g5
        • 2.Sfe5#
      • 1...Bg5
        • 2.Sfh6#
      • 1...Bf6
        • 2.Sgh6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK::R(H)+S(F),DCHECK
    • B(c);SBLOCK::S(C)
    • P(f);SBLOCK,XS(C)::QAR(A)
    • P(i);SBLOCK,S_CUTB(c)::R(H)+S(F)
  • Tries
    • Try
      • R(D);CHECK,N_SPINB(E),XB(d)
      • Refutation
        • P(g);XR(D)
    • Try
      • Q(A);
      • Vars
        • P(f);P_SPINP(f),SBLOCK,XS(C)::QAR(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • S(C)
      • Vars
        • P(f);SBLOCK,XS(C)::QAR1(A)
        • P(i);SBLOCK,S_CUTB(c)::R(H)+S(F)
        • B(c);SBLOCK::R(H)+S(F),DCHECK
      • Refutation
        • K(e);N_SPINB(d),S_FLIGHT,XS(C)
    • Try
      • Q(A);
      • Vars
        • P(f);SBLOCK,XS(C)::QAR(A)
        • B(c);SBLOCK::S(C)
      • Refutation
        • P(a);
    • Try
      • Q(A);XP(a)
      • Threat
        • QAR1(A)
      • Refutation
        • B(c);XQ(A)
  • Actual
    • K(G);N_SPINB(E),P-FLIGHT
    • Vars
      • K(e);N_SPINB(d),P_SPINP(a),S_FLIGHT,XS(C)::B(E),XR(h)
      • P(f);SBLOCK,XS(C)::QAR(A)
      • P(i);SBLOCK,S_CUTB(c)::R(H)+S(F)
      • B(c);SBLOCK::R(H)+S(F),DCHECK
      • B(c);SBLOCK::S(C)
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