MESON Chess Problem Database

Problem Display
PID: 176083 (6q1/1rP4B/Q6n/1n3Rp1/2kpN3/5P2/N7/R3K3 w Q - 0 1)

Mauritius, Ch

Schach-Echo, 1942

6q1/1rP4B/Q6n/1n3Rp1/2kpN3/5P2/N7/R3K3

#2

9 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qxb5#
    • 1...Rxc7
      • 2.Qxb5#
    • 1...d3
      • 2.Qa4#
  • Tries
    • 1.Kd2?
      • threat
        • 2.Qa4#
      • 1...Sxf5
        • 2.Bxg8#
      • 1...Qa8
        • 2.Qe6#
      • 1...Qf8
        • 2.Qe6#
      • 1...Ra7
        • 2.Qxb5#
      • 1...Kb3!
    • 1.Rd1?
      • threat
        • 2.Qa4#
      • 1...Sxf5
        • 2.Bxg8#
      • 1...Qa8
        • 2.Qe6#
      • 1...Qf8
        • 2.Qe6#
      • 1...Ra7
        • 2.Qxb5#
      • 1...Kb3!
    • 1.Rc5+?
      • 1...Kb3
        • 2.Rb1#
      • 1...Kd3!
  • Keys
    • 1.0-0-0!
      • threat
        • 2.Qa4#
      • 1...Kb3
        • 2.Sd2#
      • 1...Sxf5
        • 2.Bxg8#
      • 1...Qa8
        • 2.Qe6#
      • 1...Qf8
        • 2.Qe6#
      • 1...Ra7
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(f);N_GUARD::QAB1(G),XS(c)
    • R(f);N_GUARD,XP(H)::QAB1(G),XS(c)
    • P(b);SBLOCK::QAR2(G)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAR2(G)
      • Vars
        • S(e);N_GUARD,XR(F)::B(I),XQ(g)
        • Q(g);N_GUARD::QAB(G)
        • R(f);N_GUARD::QAB1(G),XS(c)
      • Refutation
        • K(a);N_SPINS(c),S_FLIGHT
    • Try
      • R(A);
      • Threat
        • QAR2(G)
      • Vars
        • S(e);N_GUARD,XR(F)::B(I),XQ(g)
        • Q(g);N_GUARD::QAB(G)
        • R(f);N_GUARD::QAB1(G),XS(c)
      • Refutation
        • K(a);N_SPINS(c),S_FLIGHT
    • Try
      • R(F);CHECK
      • Vars
        • K(a);N_SPINS(c),S_FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • K(B);0-0-0
    • Threat
      • QAR2(G)
    • Vars
      • K(a);N_SPINS(c),S_FLIGHT::S(E)
      • S(e);N_GUARD,XR(F)::B(I),XQ(g)
      • Q(g);N_GUARD::QAB(G)
      • R(f);N_GUARD::QAB1(G),XS(c)
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