MESON Chess Problem Database

Problem Display
PID: 84661 (KR6/8/1pp5/2Q2B2/k1P5/8/n7/nR6 w - - 0 1)

Fillery, William Edmund Frank

Szachy, 1960

KR6/8/1pp5/2Q2B2/k1P5/8/n7/nR6

#2

6 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Bxc2#
    • 1...Sc1
      • 2.Qb4#
    • 1...Sc3
      • 2.Qb4#
    • 1...Sb4
      • 2.Qxb4#
    • 1...b5
      • 2.Qa7#
  • Tries
    • 1.Kb7?
      • threat
        • 2.Ra8#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sb3!
    • 1.Bc2+?
      • 1...Sb3
        • 2.Bxb3#
      • 1...Sxc2!
    • 1.R1xb6?
      • threat
        • 2.Ra6#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sb3!
    • 1.R8xb6?
      • threat
        • 2.Ra6#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sb3!
    • 1.Rb7?
      • threat
        • 2.Ra7#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sb3!
    • 1.Qxb6?
      • threat
        • 2.Qa7#
        • 2.Qa6#
      • 1...Ka3
        • 2.Qa5#
        • 2.Qa7#
        • 2.Qa6#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sb3!
    • 1.Qe7?
      • threat
        • 2.Qa7#
      • 1...Ka5
        • 2.Qa3#
        • 2.Qa7#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sb3!
    • 1.Qb5+?
      • 1...Ka3
        • 2.Qa6#
      • 1...cxb5!
    • 1.Qxc6+?
      • 1...Ka5
        • 2.Qb5#
      • 1...b5
        • 2.Qa6#
      • 1...Ka3!
  • Keys
    • 1.Rb2!
      • 1...bxc5
        • 2.Rxa2#
      • 1...Sb4
        • 2.Qxb4#
      • 1...b5
        • 2.Qa7#
      • 1...Sb3
        • 2.Rxa2#
      • 1...Sc2
        • 2.Bxc2#
      • 1...Sc1
        • 2.Qb4#
      • 1...Sc3
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::B(D),XS(a)
    • S(b);N_GUARD::QAR1(C)
    • S(b);N_GUARD::QAR1(C),XS(b)
    • P(d);OGATE::QAR(C)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • R(F)
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
      • Refutation
        • S(a);
    • Try
      • B(D);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::B(D),XS(a)
      • Refutation
        • S(a);XB(D)
    • Try
      • R(A);XP(d)
      • Threat
        • R(A)
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
      • Refutation
        • S(a);
    • Try
      • R(F);XP(d)
      • Threat
        • R(F)
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
      • Refutation
        • S(a);
    • Try
      • R(F);
      • Threat
        • R(F)
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
      • Refutation
        • S(a);
    • Try
      • Q(C);XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
      • Refutation
        • S(a);
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
      • Refutation
        • S(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR(C)
      • Refutation
        • P(e);XQ(C)
    • Try
      • Q(C);CHECK,XP(e)
      • Vars
        • K(c);P-FLIGHT::QAR1(C)
        • P(d);OGATE,P_SPINP(d)::QAR2(C)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • R(A);
    • Vars
      • P(d);XQ(C)::R(A),XS(b)
      • S(b);N_GUARD::QAR1(C),XS(b)
      • P(d);OGATE::QAR(C)
      • S(a);SBLOCK::R(A),XS(b)
      • S(a);N_GUARD::B(D),XS(a)
      • S(b);N_GUARD::QAR1(C)
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