MESON Chess Problem Database

Problem Display
PID: 848 (6RB/6Q1/Kp6/1B5p/R3NNr1/3pp2P/7p/5qkr w - - 0 1)

Morse, Christopher Jeremy

British Chess Magazine, 1974

6RB/6Q1/Kp6/1B5p/R3NNr1/3pp2P/7p/5qkr

#2

9 + 9

273 Mat Plus 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Rxa1#
      • 2.Qxa1#
  • Tries
    • 1.Qa1?
      • 1...Qxa1
        • 2.Rxa1#
      • 1...Qb1
        • 2.Qxb1#
      • 1...Qc1
        • 2.Qxc1#
      • 1...Qd1
        • 2.Qxd1#
      • 1...Qe1
        • 2.Qxe1#
      • 1...Rg2
        • 2.Rxg2#
      • 1...Rg3
        • 2.Rxg3#
      • 1...Rg5
        • 2.Rxg5#
      • 1...Rg6
        • 2.Rxg6#
      • 1...Rg7
        • 2.Rxg7#
      • 1...d2
        • 2.Qxf1#
      • 1...e2
        • 2.Bd4#
      • 1...h4
        • 2.Rxg4#
      • 1...Rxg8!
    • 1.Qxg4+?
      • 1...Qg2
        • 2.Ra1#
        • 2.Qd1#
        • 2.Qxg2#
      • 1...hxg4!
  • Keys
    • 1.Ra1!
      • 1...Qxa1+
        • 2.Qxa1#
      • 1...Rxg7
        • 2.Rxg7#
      • 1...Qb1
        • 2.Rxb1#
      • 1...Qc1
        • 2.Rxc1#
      • 1...Qd1
        • 2.Rxd1#
      • 1...Qe1
        • 2.Rxe1#
      • 1...Rg2
        • 2.Qxg2#
      • 1...Rg3
        • 2.Qxg3#
      • 1...Rg5
        • 2.Qxg5#
      • 1...Rg6
        • 2.Qxg6#
      • 1...d2
        • 2.Rxf1#
      • 1...e2
        • 2.Qd4#
      • 1...h4
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);P_PINQ(a)
      • Vars
        • Q(a);N_SPINQ(a),OGATE,P_PINR(B),XQ(G)::R(B),XQ(a)
        • Q(a);OGATEB::QAR(G),XQ(a)
        • Q(a);OGATEB::QAR2(G),XQ(a)
        • R(g);OGATE::R1(H),XR(g)
        • R(g);OGATE::R(H),XR(g)
        • R(g);OGATEB::R(H),XR(g)
        • P(e);P_PINB(E)::QAR1(G),XQ(a)
        • P(f);OGATEB::B(I)
        • P(h);N_GUARD::R(H),XR(g)
      • Refutation
        • R(g);N_SPINR(g),XR(H)
    • Try
      • Q(G);CHECK,XR(g)
      • Refutation
        • P(h);P_SPINP(h),XQ(G)
  • Actual
    • R(B);P_PINQ(a)
    • Vars
      • Q(a);CHECK,N_SPINQ(a),OGATE,XR(B)::QAR(G),XQ(a)
      • R(g);OGATE,XQ(G)::R(H),XR(g)
      • Q(a);OGATEB::R(B),XQ(a)
      • R(g);OGATE::QAR1(G),XR(g)
      • R(g);OGATE::QAR2(G),XR(g)
      • R(g);OGATEB::QAR(G),XR(g)
      • P(e);P_PINB(E)::R1(B),XQ(a)
      • P(f);OGATEB::QAB(G)
      • P(h);N_GUARD::QAR(G),XR(g)
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