MESON Chess Problem Database

Problem Display
PID: 78743 (3R2K1/2NP2P1/P1k5/5P2/N2BP3/5B2/4P2Q/5R1q w - - 0 1)

Morse, Christopher Jeremy

The Problemist, 2008

3R2K1/2NP2P1/P1k5/5P2/N2BP3/5B2/4P2Q/5R1q

#2

14 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.Rc1#
  • Tries
    • 1.Be5?
      • 1...Qxf3
        • 2.Qh6#
      • 1...Qxf1
        • 2.Qh6#
      • 1...Qxh2
        • 2.Rc1#
      • 1...Qg2
        • 2.Rc1#
      • 1...Qg1!
    • 1.Qh6+?
      • 1...Kxc7
        • 2.Bb6#
        • 2.Qb6#
      • 1...Qxh6!
    • 1.e5+?
      • 1...Kxc7
        • 2.Bb6#
      • 1...Qxf3!
    • 1.a7?
      • threat
        • 2.a8Q#
        • 2.a8B#
      • 1...Kb7
        • 2.a8Q#
        • 2.a8B#
      • 1...Qxf3
        • 2.a8Q#
        • 2.a8B#
      • 1...Qxf1
        • 2.a8Q#
        • 2.a8B#
      • 1...Qg2
        • 2.a8Q#
        • 2.a8B#
      • 1...Qg1
        • 2.a8Q#
        • 2.a8B#
      • 1...Qxh2!
  • Keys
    • 1.Bb6!
      • 1...Qxf3
        • 2.Qh6#
      • 1...Qxf1
        • 2.Qh6#
      • 1...Qxh2
        • 2.e5#
      • 1...Qg2
        • 2.Rc1#
      • 1...Qg1
        • 2.e5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_GUARD,P_PINP(L)::R(A)
  • Tries
    • Try
      • B(F);
      • Vars
        • Q(a);N_GUARD,XB(D)::QAR(C)
        • Q(a);N_GUARD,XR(A)::QAR(C)
        • Q(a);N_GUARD,XQ(C)::R(A)
        • Q(a);N_GUARD,P_PINP(L)::R(A)
      • Refutation
        • Q(a);P_PINP(L)
    • Try
      • Q(C);CHECK
      • Refutation
        • Q(a);XQ(C)
    • Try
      • P(G);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(J)::B(F)
      • Refutation
        • Q(a);XB(D)
    • Try
      • P(I);
      • Threat
        • P=Q
      • Vars
        • K(b);S_FLIGHT::P=Q
        • Q(a);XB(D)::P=Q
        • Q(a);XR(A)::P=Q
        • Q(a);P_PINP(L)::P=Q
      • Refutation
        • Q(a);XQ(C)
  • Actual
    • B(F);
    • Vars
      • Q(a);N_GUARD,XB(D)::QAR(C)
      • Q(a);N_GUARD,XR(A)::QAR(C)
      • Q(a);N_GUARD,XQ(C)::B(D)+P(G)
      • Q(a);N_GUARD,P_PINP(L)::R(A)
      • Q(a);N_GUARD,P_PINP(L)::B(D)+P(G)
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