MESON Chess Problem Database

Problem Display
PID: 8021 (8/8/4K2b/4B3/2p1k1p1/3ppn2/4P3/3R3Q w - - 0 1)

Rice, John Michael

Chess Problems for Solving, 1995

8/8/4K2b/4B3/2p1k1p1/3ppn2/4P3/3R3Q

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Qh7#
    • 1...Bg5
      • 2.Qh7#
    • 1...Bg7
      • 2.Qh7#
    • 1...Bf8
      • 2.Qh7#
    • 1...dxe2
      • 2.Rd4#
    • 1...c3
      • 2.exd3#
    • 1...g3
      • 2.Qxf3#
      • 2.exf3#
  • Tries
    • 1.Rd2?
      • 1...dxe2
        • 2.Rd4#
        • 2.Qb1#
      • 1...Bf4
        • 2.Qh7#
      • 1...Bg5
        • 2.Qh7#
      • 1...Bg7
        • 2.Qh7#
      • 1...Bf8
        • 2.Qh7#
      • 1...c3
        • 2.exd3#
      • 1...g3
        • 2.Qxf3#
        • 2.exf3#
      • 1...exd2!
  • Keys
    • 1.Ra1!
      • 1...dxe2
        • 2.Qb1#
      • 1...Bg5
        • 2.Qh7#
      • 1...Bf4
        • 2.Qh7#
      • 1...Bg7
        • 2.Qh7#
      • 1...Bf8
        • 2.Qh7#
      • 1...d2
        • 2.Qb1#
      • 1...c3
        • 2.Ra4#
      • 1...g3
        • 2.Qxf3#
        • 2.exf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(g);OGATE::QAB(B)
    • P(a);OGATE,XP(C)::R1(A)
    • P(d);N_GUARD::P(C),XP(a)
  • Tries
    • Try
      • R(A);
      • Vars
        • B(g);OGATE::QAB(B)
        • P(d);N_GUARD::P(C),XP(a)
      • Refutation
        • P(b);XR(A)
  • Actual
    • R(A);
    • Vars
      • P(a);OGATEB,XP(C)::QAB(B)
      • B(g);OGATE::QAB(B)
      • P(a);OGATEB::QAB(B)
      • P(d);OGATEB::R(A)
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