MESON Chess Problem Database

Problem Display
PID: 152993 (1K6/8/B7/8/Q7/2B5/1ppp3R/1Nk5 w - - 0 1)

Harley, Brian

Morning Post, 1935

(First published on Sat Oct 26 1935)

1K6/8/B7/8/Q7/2B5/1ppp3R/1Nk5

#2

6 + 4

15290 Harley Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kd1
      • 2.Rh1#
    • 1...cxb1Q
      • 2.Bxd2#
    • 1...cxb1B
      • 2.Bxd2#
    • 1...cxb1R
      • 2.Bxd2#
    • 1...d1S
      • 2.Qxc2#
    • 1...d1R
      • 2.Qxc2#
  • Tries
    • 1.Bxb2+?
      • 1...Kxb1
        • 2.Qa1#
      • 1...Kd1
        • 2.Rh1#
      • 1...Kxb2!
    • 1.Bxd2+?
      • 1...Kd1
        • 2.Sc3#
        • 2.Be2#
        • 2.Rh1#
        • 2.Qg4#
      • 1...Kxb1!
    • 1.Rxd2?
      • threat
        • 2.Qxc2#
      • 1...cxb1Q
        • 2.Rd1#
        • 2.Qd1#
      • 1...cxb1S
        • 2.Rd1#
        • 2.Qd1#
        • 2.Qc2#
      • 1...cxb1B
        • 2.Rd1#
        • 2.Qd1#
      • 1...cxb1R
        • 2.Rd1#
        • 2.Qd1#
        • 2.Qc2#
      • 1...Kxb1!
  • Keys
    • 1.Qb3!
      • 1...Kxb1
        • 2.Qxb2#
      • 1...Kd1
        • 2.Rh1#
      • 1...cxb1Q
        • 2.Bxd2#
      • 1...cxb1S
        • 2.Bxb2#
      • 1...cxb1B
        • 2.Bxb2#
        • 2.Bxd2#
      • 1...cxb1R
        • 2.Bxd2#
      • 1...d1Q
        • 2.Qxb2#
      • 1...d1S
        • 2.Qxc2#
      • 1...d1B
        • 2.Qxb2#
      • 1...d1R
        • 2.Qxc2#
        • 2.Qxb2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • K(a);P-FLIGHT,P_SPINP(c)::R(B)
    • P(c);SBLOCK,XS(A)::B(C),XP(d)
    • P(d);::QAR1(D),XP(c)
  • Tries
    • Try
      • B(C);CHECK,XP(b)
      • Vars
        • K(a);P-FLIGHT,XS(A)::QAR1(D)
        • K(a);P-FLIGHT,P_SPINP(c)::R(B)
      • Refutation
        • K(a);S_FLIGHT,XB(C)
    • Try
      • B(C);CHECK,XP(d)
      • Refutation
        • K(a);P-FLIGHT,XS(A)
    • Try
      • R(B);XP(d)
      • Threat
        • QAR1(D),XP(c)
      • Refutation
        • K(a);P-FLIGHT,XS(A)
  • Actual
    • Q(D);
    • Vars
      • K(a);P-FLIGHT,P_SPINP(b),XS(A)::QAR1(D),XP(b)
      • K(a);P-FLIGHT,P_SPINP(c)::R(B)
      • P(c);SBLOCK,XS(A)::B(C),XP(d)
      • P(c);SBLOCK,XS(A)::B(C),XP(b)
      • P(d);SBLOCK::QAB1(D),XP(b)
      • P(d);::QAR1(D),XP(c)
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