MESON Chess Problem Database

Problem Display
PID: 48318 (r3k3/2p4N/1rp1pB2/2P1N1P1/5Q1K/3R1B2/3p1p2/3q3n w q - 0 1)

Macleod, Norman Alasdair

3rd Prize, BCF 141. Ty., 1978-1979

r3k3/2p4N/1rp1pB2/2P1N1P1/5Q1K/3R1B2/3p1p2/3q3n

#2

9 + 10

3750 FIDE Album (1977-1979) 1984
6455 The Chessboard Adventures of Norman Macleod 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Bh5#
    • 1...Qb3
      • 2.Bh5#
    • 1...Qa4
      • 2.Bh5#
    • 1...Qa1
      • 2.Bh5#
    • 1...Qb1
      • 2.Bh5#
    • 1...Qc1
      • 2.Bh5#
    • 1...Qe1
      • 2.Bh5#
    • 1...Qf1
      • 2.Bh5#
    • 1...Qg1
      • 2.Bh5#
    • 1...Rb1
      • 2.Bxc6#
    • 1...Rb2
      • 2.Bxc6#
    • 1...Rb3
      • 2.Bxc6#
    • 1...Rb4
      • 2.Bxc6#
    • 1...Rb5
      • 2.Bxc6#
    • 1...Rb7
      • 2.Bxc6#
    • 1...Rbb8
      • 2.Bxc6#
    • 1...Ra1
      • 2.Rd8#
    • 1...Ra2
      • 2.Rd8#
    • 1...Ra3
      • 2.Rd8#
    • 1...Ra4
      • 2.Rd8#
    • 1...Ra5
      • 2.Rd8#
    • 1...Ra6
      • 2.Rd8#
    • 1...Ra7
      • 2.Rd8#
    • 1...Rd8
      • 2.Rxd8#
  • Tries
    • 1.Rd6?
      • threat
        • 2.Rxe6#
      • 1...Qb3
        • 2.Bh5#
      • 1...cxd6!
    • 1.Qd4?
      • threat
        • 2.Qd7#
      • 1...Qa4
        • 2.Bh5#
      • 1...Rb4
        • 2.Bxc6#
      • 1...Rd8
        • 2.Qxd8#
      • 1...Ra4!
    • 1.Qe4?
      • threat
        • 2.Qg6#
      • 1...Qa4
        • 2.Bh5#
      • 1...Ra4
        • 2.Rd8#
      • 1...Rb4!
    • 1.Qg4?
      • threat
        • 2.Qh5#
        • 2.Qxe6#
      • 1...Qxf3
        • 2.Qxe6#
      • 1...Qb3
        • 2.Qh5#
      • 1...Rb4
        • 2.Bxc6#
      • 1...Ra4
        • 2.Rd8#
      • 1...Sg3
        • 2.Qxe6#
      • 1...Qa4!
    • 1.cxb6?
      • threat
        • 2.Bxc6#
      • 1...Qc2
        • 2.Bh5#
      • 1...Qa4
        • 2.Bh5#
      • 1...Qc1
        • 2.Bh5#
      • 1...Rd8
        • 2.Rxd8#
      • 1...c5
        • 2.Bc6#
      • 1...Qxf3!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qxe6#
      • 1...Qb3
        • 2.Bh5#
      • 1...Qa4
        • 2.Bh5#
      • 1...Rb4
        • 2.Bxc6#
      • 1...Ra4
        • 2.Rd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 20
  • Sets
    • Q(a);N_GUARD::B(B)
    • Q(a);N_GUARD,P_PINQ(C)::B(B)
    • R(e);N_GUARD::B(B),XP(f)
    • R(e);N_GUARD,P_PINQ(C)::B(B),XP(f)
    • R(i);N_GUARD::R1(A)
    • R(i);N_GUARD,P_PINQ(C)::R1(A)
    • R(i);N_GUARD::R1(A),XR(i)
  • Tries
    • Try
      • R(A);
      • Threat
        • R(A),XP(g)
      • Vars
        • Q(a);N_GUARD::B(B)
      • Refutation
        • P(h);XR(A)
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • Q(a);N_GUARD,P_PINQ(C)::B(B)
        • R(e);N_GUARD,P_PINQ(C)::B(B),XP(f)
        • R(i);N_GUARD::QAR1(C),XR(i)
      • Refutation
        • R(i);P_PINQ(C)
    • Try
      • Q(C);
      • Threat
        • QAB(C)
      • Vars
        • Q(a);N_GUARD,P_PINQ(C)::B(B)
        • R(i);N_GUARD,P_PINQ(C)::R1(A)
      • Refutation
        • R(e);P_PINQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);XB(B)::QAR2(C),XP(g)
        • Q(a);::QAB(C)
        • R(e);N_GUARD,P_PINQ(C)::B(B),XP(f)
        • R(i);N_GUARD,P_PINQ(C)::R1(A)
        • S(b);::QAR2(C),XP(g)
      • Refutation
        • Q(a);P_PINQ(C)
    • Try
      • P(E);XR(e)
      • Threat
        • B(B),XP(f)
      • Vars
        • Q(a);N_GUARD::B(B)
        • Q(a);N_GUARD,P_PINQ(C)::B(B)
        • R(i);N_GUARD::R1(A),XR(i)
        • P(f);::B(B)
      • Refutation
        • Q(a);XB(B)
  • Actual
    • Q(C);
    • Threat
      • QAR2(C),XP(g)
    • Vars
      • Q(a);N_GUARD::B(B)
      • Q(a);N_GUARD,P_PINQ(C)::B(B)
      • R(e);N_GUARD,P_PINQ(C)::B(B),XP(f)
      • R(i);N_GUARD,P_PINQ(C)::R1(A)
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