MESON Chess Problem Database

Problem Display
PID: 201686 (4K1Q1/1P1P3B/3RN3/1p1qp2p/1Bk1r2r/3NR2p/P3P2P/2n5 w - - 0 1)

Millins, Edward

4th Comm., Brisbane Courier, 1922

4K1Q1/1P1P3B/3RN3/1p1qp2p/1Bk1r2r/3NR2p/P3P2P/2n5

#2

13 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe6+
      • 2.Qxe6#
    • 1...Qd4
      • 2.Sxd4#
    • 1...Qc5
      • 2.Sexc5#
  • Tries
    • 1.Rc6+?
      • 1...Qc5
        • 2.Rxc5#
      • 1...Qxc6!
  • Keys
    • 1.Sef4!
      • threat
        • 2.Rxe4#
        • 2.Qxd5#
      • 1...Qe6+
        • 2.Qxe6#
      • 1...Qf7+
        • 2.Qxf7#
      • 1...Qxg8+
        • 2.Bxg8#
      • 1...exf4+
        • 2.Rxe4#
      • 1...Kd4
        • 2.Rxe4#
      • 1...Rxe3
        • 2.Qxd5#
      • 1...Rexf4
        • 2.Qxd5#
      • 1...Rhxf4
        • 2.Qxd5#
      • 1...Sxa2
        • 2.Qxd5#
      • 1...Sxe2
        • 2.Qxd5#
      • 1...Sxd3
        • 2.Rxe4#
      • 1...Rd4
        • 2.Rc6#
      • 1...Sb3
        • 2.Qxd5#

This is a version of 59352

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 2
  • Sets
    • Q(g);CHECK,OGATE,P_SPINQ(g),XS(H)::QAB(M),XQ(g)
    • Q(g);::QAB(M)+S(H),XQ(g)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • Q(g);N_GUARD,P_SPINQ(g)::R1(G),XQ(g)
      • Refutation
        • Q(g);P_PINP(J),XR(G)
  • Actual
    • S(H);P_PINQ(g)
    • Threat
      • DUALS(2)
    • Vars
      • Q(g);CHECK,OGATEB::QAB(M),XQ(g)
      • Q(g);CHECK,N_SPINQ(g),OGATE,XQ(M)::B(K),XQ(g)
      • P(h);CHECK,XS(H)::R(E),XR(d)
      • K(c);P-FLIGHT::R1(E),XR(d)
      • R(d);XR(E)::QAB1(M),XQ(g)
      • R(d);XS(H)::QAB1(M),XQ(g)
      • R(e);XS(H)::QAB1(M),XQ(g)
      • S(a);XP(A)::QAB1(M),XQ(g)
      • S(a);XP(B)::QAB1(M),XQ(g)
      • S(a);XS(D)::R(E),XR(d)
      • R(d);SBLOCK::R(G)
      • S(a);::QAB1(M),XQ(g)
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