MESON Chess Problem Database

Problem Display
PID: 63700 (3bq1BB/2pr1r2/2N1kp2/2PN2pp/4P3/7n/3Q4/K7 w - - 0 1)

Warren, S

Chess, 1946

3bq1BB/2pr1r2/2N1kp2/2PN2pp/4P3/7n/3Q4/K7

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd5
      • 2.Qxd5#
    • 1...f5
      • 2.Sd4#
  • Tries
    • 1.Sxc7+?
      • 1...Rxc7
        • 2.Qd5#
        • 2.Qd6#
      • 1...Bxc7!
    • 1.Qa2?
      • threat
        • 2.Sf4#
        • 2.Sxc7#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Re7
        • 2.Sb6#
        • 2.Sxf6#
      • 1...Sf4
        • 2.Sxf4#
        • 2.Sxc7#
      • 1...Rd6!
  • Keys
    • 1.Qxg5!
      • threat
        • 2.Sd4#
        • 2.Qf5#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Sxg5
        • 2.Sf4#
      • 1...fxg5
        • 2.Sd4#
      • 1...Rd6
        • 2.Qf5#
      • 1...Re7
        • 2.Qf5#
      • 1...f5
        • 2.Sd4#
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(g);OGATE,XS(E)::QAB1(B),XR(g)
    • P(e);::S(F)
  • Tries
    • Try
      • S(E);CHECK,XP(f)
      • Refutation
        • B(i);XS(E)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(g);N_SPINR(h),OGATE,P_SPINR(g),XS(E)::QAB1(B),XR(g)
      • Refutation
        • R(g);
  • Actual
    • Q(B);XP(b)
    • Threat
      • DUALS(2)
    • Vars
      • R(g);OGATE,XS(E)::QAB1(B),XR(g)
      • S(a);N_GUARD,XQ(B)::S(E)
      • P(e);XQ(B)::S(F)
      • R(g);::QAB1(B)
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