MESON Chess Problem Database

Problem Display
PID: 154605 (8/8/7B/2N5/N7/3Q4/1r1PK3/b1k5 w - - 0 1)

Williams, Philip Hamilton

Source?, 0000

8/8/7B/2N5/N7/3Q4/1r1PK3/b1k5

#2

6 + 3

15 British Chess Magazine 1903

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Sb3#
    • 1...Rxd2+
      • 2.Bxd2#
    • 1...Rb3
      • 2.Sxb3#
  • Tries
    • 1.Sxb2?
      • 1...Bxb2
        • 2.Sb3#
      • 1...Kxb2!
    • 1.Qe4?
      • 1...Rxd2+
        • 2.Bxd2#
      • 1...Rc2
        • 2.Qh1#
      • 1...Rb1
        • 2.d4#
      • 1...Ra2
        • 2.Sb3#
      • 1...Rb3
        • 2.Sxb3#
      • 1...Rb4
        • 2.d4#
      • 1...Rb5
        • 2.d4#
      • 1...Rb7
        • 2.d4#
      • 1...Rb8
        • 2.d4#
      • 1...Rb6!
    • 1.Qf5?
      • 1...Rxd2+
        • 2.Bxd2#
      • 1...Rc2
        • 2.Qf1#
      • 1...Rb1
        • 2.d4#
      • 1...Ra2
        • 2.Sb3#
      • 1...Rb3
        • 2.Sxb3#
      • 1...Rb4
        • 2.d4#
      • 1...Rb5
        • 2.d4#
      • 1...Rb7
        • 2.d4#
      • 1...Rb8
        • 2.d4#
      • 1...Rb6!
    • 1.Qc3+?
      • 1...Rc2
        • 2.Qxa1#
      • 1...Kb1!
  • Keys
    • 1.Qg6!
      • 1...Rxd2+
        • 2.Bxd2#
      • 1...Rc2
        • 2.Qg1#
      • 1...Rb1
        • 2.d4#
      • 1...Ra2
        • 2.Sb3#
      • 1...Rb3
        • 2.Sxb3#
      • 1...Rb4
        • 2.d4#
      • 1...Rb5
        • 2.d4#
      • 1...Rb6
        • 2.d4#
      • 1...Rb7
        • 2.d4#
      • 1...Rb8
        • 2.d4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD::S(E)
    • R(c);CHECK,OGATE,P_SPINR(c),XP(A)::B(F),XR(c)
    • R(c);N_GUARD,N_PINP(A)::S(E),XR(c)
  • Tries
    • Try
      • S(D);N_SPINP(A),XR(c)
      • Vars
        • B(a);SBLOCK,XS(D)::S(E)
      • Refutation
        • K(b);S_FLIGHT,XS(D)
    • Try
      • Q(C);
      • Vars
        • R(c);CHECK,OGATE,P_SPINR(c),XP(A)::B(F),XR(c)
        • R(c);SBLOCK::QAR(C)
        • R(c);N_PINP(A)::B(F)+P(A)
        • R(c);N_GUARD::S(E)
        • R(c);N_GUARD,N_PINP(A)::S(E),XR(c)
      • Refutation
        • R(c);N_PINP(A)
    • Try
      • Q(C);
      • Vars
        • R(c);CHECK,OGATE,P_SPINR(c),XP(A)::B(F),XR(c)
        • R(c);SBLOCK::QAR(C)
        • R(c);N_PINP(A)::B(F)+P(A)
        • R(c);N_GUARD::S(E)
        • R(c);N_GUARD,N_PINP(A)::S(E),XR(c)
      • Refutation
        • R(c);N_PINP(A)
    • Try
      • Q(C);CHECK
      • Vars
        • R(c);OGATE,P_SPINR(c),SBLOCK::QAR2(C),XB(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • R(c);CHECK,OGATE,P_SPINR(c),XP(A)::B(F),XR(c)
      • R(c);SBLOCK::QAR(C)
      • R(c);N_PINP(A)::B(F)+P(A)
      • R(c);N_GUARD::S(E)
      • R(c);N_GUARD,N_PINP(A)::S(E),XR(c)
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