MESON Chess Problem Database

Problem Display
PID: 144773 (2R5/4P3/P1N5/r2P4/2k1pP2/p7/P7/1Q2K2B w - - 0 1)

Fellows, Arthur G

Source?, 0000

2R5/4P3/P1N5/r2P4/2k1pP2/p7/P7/1Q2K2B

#2

10 + 4

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qb3#
    • 1...Rc5
      • 2.Qb3#
  • Tries
    • 1.Sxa5+?
      • 1...Kd4
        • 2.Qxe4#
      • 1...Kxd5!
    • 1.Se5+?
      • 1...Kd4
        • 2.Qxe4#
      • 1...Kxd5!
    • 1.Sd8+?
      • 1...Kd4
        • 2.Qxe4#
      • 1...Kxd5
        • 2.Qd3#
        • 2.Qd1#
      • 1...Rc5!
    • 1.Bxe4?
      • threat
        • 2.Qb4#
      • 1...Kc3
        • 2.Qc2#
        • 2.Qc1#
        • 2.Qb3#
        • 2.Qb4#
      • 1...Kc5
        • 2.Qb4#
      • 1...Rb5
        • 2.Qc2#
        • 2.Qc1#
      • 1...Ra4!
    • 1.Qb4+?
      • 1...Kd3
        • 2.Qb3#
      • 1...Kxd5!
  • Keys
    • 1.Qb6!
      • 1...Kc3
        • 2.Qb3#
      • 1...Kd3
        • 2.Sb4#
        • 2.Se5#
        • 2.Qb3#
      • 1...Kxd5
        • 2.Sb4#
      • 1...Rxd5
        • 2.Se5#
      • 1...Rxa6
        • 2.Sb4#
      • 1...Rc5
        • 2.Qb3#
      • 1...Ra4
        • 2.Sb4#
      • 1...Rb5
        • 2.Qd4#
      • 1...e3
        • 2.Se5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR1(A)
    • R(d);SBLOCK::QAB1(A)
  • Tries
    • Try
      • S(H);CHECK,XR(d)
      • Vars
        • K(b);P-FLIGHT::QAR1(A),XP(c)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT,XP(F)
    • Try
      • S(H);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A),XP(c)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT,XP(F)
    • Try
      • S(H);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A),XP(c)
      • Refutation
        • R(d);P_SPINR(d)
    • Try
      • B(C);XP(c)
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
      • Refutation
        • R(d);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT,XP(F)
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT::QAR1(A)
      • K(b);P_SPINP(c),S_FLIGHT,XP(F)::S(H)
      • R(d);SBLOCK,XP(F)::R(J)+S(H),DCHECK
      • R(d);N_GUARD,XP(G)::R(J)+S(H)
      • R(d);SBLOCK::QAB1(A)
      • R(d);N_GUARD::R(J)+S(H)
      • R(d);SBLOCK::QAR1(A)
      • P(c);::R(J)+S(H),DCHECK
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