MESON Chess Problem Database

Problem Display
PID: 87674 (4Q3/8/8/7p/2p1P1pr/1Nr1k1pN/2B3P1/4K3 w - - 0 1)

Morse, Christopher Jeremy

8th Comm., The Problemist, 1968

4Q3/8/8/7p/2p1P1pr/1Nr1k1pN/2B3P1/4K3

#2

7 + 7

6490 yacpdb 2009
133 The Problemist Supplement 2015

SOLUTION

  • SOUND
  • Tries
    • 1.Qd7?
      • threat
        • 2.Qd2#
        • 2.Qd4#
        • 2.Qa7#
      • 1...Rxc2
        • 2.Qd4#
      • 1...Rxb3
        • 2.Qd2#
      • 1...Rxh3
        • 2.Qd2#
      • 1...cxb3
        • 2.Qd2#
      • 1...gxh3
        • 2.Qd2#
      • 1...Rd3!
    • 1.Qd8?
      • threat
        • 2.Qg5#
        • 2.Qb6#
        • 2.Qd2#
        • 2.Qd4#
      • 1...Rxc2
        • 2.Qd4#
      • 1...Rxb3
        • 2.Qd2#
      • 1...Rxh3
        • 2.Qg5#
        • 2.Qd2#
      • 1...cxb3
        • 2.Qd2#
      • 1...gxh3
        • 2.Qd2#
      • 1...Rd3!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qxc3#
        • 2.Qxg3#
        • 2.Qd4#
        • 2.Qf4#
        • 2.Qc5#
        • 2.Qg5#
      • 1...Rxc2
        • 2.Qd4#
      • 1...Rxb3
        • 2.Qc5#
      • 1...Rxh3
        • 2.Qg5#
      • 1...cxb3
        • 2.Qxc3#
      • 1...gxh3
        • 2.Qxg3#
      • 1...Rd3
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);
      • Threat
        • DUALS(3)
      • Vars
        • R(a);XB(B)::QAB1(G)
        • R(a);XS(D)::QAB1(G)
        • R(f);XS(E)::QAB1(G)
        • P(d);XS(D)::QAB1(G)
        • P(e);XS(E)::QAB1(G)
      • Refutation
        • R(a);
    • Try
      • Q(G);
      • Threat
        • DUALS(4)
      • Vars
        • R(a);XB(B)::QAB1(G)
        • R(a);XS(D)::QAB1(G)
        • P(d);XS(D)::QAB1(G)
        • P(e);XS(E)::QAB1(G)
      • Refutation
        • R(a);
  • Actual
    • Q(G);
    • Threat
      • DUALS(6)
    • Vars
      • R(a);XB(B)::QAB1(G)
      • R(a);XS(D)::QAB(G)
      • R(f);XS(E)::QAB(G)
      • P(d);XS(D)::QAR2(G),XR(a)
      • P(e);XS(E)::QAR2(G),XP(c)
      • R(a);::QAB1(G)
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