MESON Chess Problem Database

Problem Display
PID: 101007 (3B4/8/8/K7/Q3B3/6R1/1ppkp1p1/br1r1bN1 w - - 0 1)

Heydon, Joseph Kentigern

Good Companions, 1920

3B4/8/8/K7/Q3B3/6R1/1ppkp1p1/br1r1bN1

#2

6 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc1
      • 2.Qxc2#
    • 1...Rbc1
      • 2.Qb4#
    • 1...Re1
      • 2.Qxc2#
    • 1...c1S
      • 2.Qb4#
    • 1...c1B
      • 2.Qb4#
    • 1...e1Q
      • 2.Qxc2#
    • 1...e1S
      • 2.Bg5#
    • 1...e1B
      • 2.Bg5#
      • 2.Qxc2#
    • 1...e1R
      • 2.Qxc2#
  • Tries
    • 1.Sf3+?
      • 1...Kc1
        • 2.Qxc2#
      • 1...Kc3
        • 2.Qxc2#
        • 2.Qb4#
      • 1...Ke3!
    • 1.Rd3+?
      • 1...Ke1
        • 2.Bh4#
      • 1...Kc1!
    • 1.Qd4+?
      • 1...Ke1
        • 2.Sf3#
      • 1...Kc1!
  • Keys
    • 1.Bh4!
      • 1...Kc1
        • 2.Qxc2#
      • 1...Ke1
        • 2.Rd3#
      • 1...c1Q
        • 2.Rd3#
      • 1...c1S
        • 2.Qb4#
      • 1...c1B
        • 2.Rd3#
        • 2.Qb4#
      • 1...c1R
        • 2.Rd3#
      • 1...e1Q
        • 2.Qxc2#
      • 1...e1S
        • 2.Bg5#
      • 1...e1B
        • 2.Bg5#
        • 2.Qxc2#
      • 1...e1R
        • 2.Qxc2#
      • 1...Rbc1
        • 2.Rd3#
        • 2.Qb4#
      • 1...Rdc1
        • 2.Rd3#
      • 1...Re1
        • 2.Qxc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • K(g);S_FLIGHT::QAR1(C),XP(f)
    • R(b);SBLOCK::QAB(C)
    • R(c);SBLOCK::QAR1(C),XP(f)
    • P(f);SBLOCK::QAB(C)
    • P(h);SBLOCK::QAR1(C),XP(f)
    • P(h);SBLOCK::B(F)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(g);S_FLIGHT::QAR1(C),XP(f)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(g);S_FLIGHT::B(F)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(g);S_FLIGHT::S(A)
      • Refutation
        • K(g);S_FLIGHT
  • Actual
    • B(F);
    • Vars
      • K(g);S_FLIGHT::QAR1(C),XP(f)
      • K(g);S_FLIGHT::B(F)+R(B)
      • P(f);SBLOCK::R1(B)
      • P(f);SBLOCK::QAB(C)
      • P(h);SBLOCK::QAR1(C),XP(f)
      • P(h);SBLOCK::B(F)
      • R(c);SBLOCK::R1(B)
      • R(c);SBLOCK::QAR1(C),XP(f)
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