MESON Chess Problem Database

Problem Display
PID: 158232 (8/2N5/1P1p4/B1QPp3/3qP3/RK2k2N/P2RP3/1B6 w - - 0 1)

Ouellet, Charles

British Chess Magazine, 1999

8/2N5/1P1p4/B1QPp3/3qP3/RK2k2N/P2RP3/1B6

#2

13 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qg1#
      • 1...Qb2+
        • 2.Kxb2#
      • 1...Qc3+
        • 2.Qxc3#
      • 1...Qxb6+
        • 2.Bxb6#
      • 1...Qa4+
        • 2.Kxa4#
      • 1...Qb4+
        • 2.Kxb4#
      • 1...Qc4+
        • 2.Kxc4#
      • 1...Qxd5+
        • 2.Sxd5#
      • 1...Qxd2
        • 2.Qxd2#
      • 1...Qd3+!
    • 1.Qc3+?
      • 1...Qd3
        • 2.Qxd3#
      • 1...Qxc3+!
  • Keys
    • 1.Qc2!
      • 1...Qb2+
        • 2.Kxb2#
      • 1...Qc3+
        • 2.Qxc3#
      • 1...Qxb6+
        • 2.Bxb6#
      • 1...Qd3+
        • 2.Qxd3#
      • 1...Qa4+
        • 2.Kxa4#
      • 1...Qb4+
        • 2.Kxb4#
      • 1...Qc4+
        • 2.Kxc4#
      • 1...Qxd5+
        • 2.Sxd5#
      • 1...Qxd2
        • 2.Qxd2#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Qa1
        • 2.Qd3#
      • 1...Qc5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(J);N_PINQ(b)
      • Threat
        • QAB(J)
      • Vars
        • Q(b);CHECK::R(E)+K(F),XQ(b)
        • Q(b);CHECK,N_GUARD::QAR2(J),XQ(b)
        • Q(b);CHECK,OGATE,XP(L)::B(I),XQ(b)
        • Q(b);CHECK,XP(K)::S(M),XQ(b)
        • Q(b);OGATE,P_SPINQ(b),XR(C)::QAB1(J),XQ(b)
      • Refutation
        • Q(b);CHECK
    • Try
      • Q(J);CHECK,N_PINQ(b)
      • Vars
        • Q(b);N_GUARD,P_PINQ(J),P_SPINQ(b)::QAR1(J),XQ(b)
      • Refutation
        • Q(b);CHECK,XQ(J)
  • Actual
    • Q(J);N_PINQ(b)
    • Vars
      • Q(b);CHECK::R(E)+K(F),XQ(b)
      • Q(b);CHECK,N_GUARD::QAR2(J),XQ(b)
      • Q(b);CHECK,OGATE,XP(L)::B(I),XQ(b)
      • Q(b);CHECK,N_GUARD::QAR1(J),XQ(b)
      • Q(b);CHECK,XP(K)::S(M),XQ(b)
      • Q(b);OGATE,XR(C)::QAB1(J),XQ(b)
      • Q(b);OGATE,XP(H)::QAR1(J),XQ(b)
      • Q(b);N_GUARD::QAR1(J)
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