MESON Chess Problem Database

Problem Display
PID: 139234 (8/4p3/2PPrPB1/pRN1k1NR/P6B/QP5P/1P3P2/4K3 w - - 0 1)

Millins, James Lever

Russian Paper, 1927

8/4p3/2PPrPB1/pRN1k1NR/P6B/QP5P/1P3P2/4K3

#2

16 + 4

56 The Problemist 1937

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4+
      • 2.Scxe6#
      • 2.Sgxe6#
    • 1...Kf4+
      • 2.Scxe6#
    • 1...Rxd6
      • 2.Sge6#
    • 1...Rxf6
      • 2.Sce6#
    • 1...exd6
      • 2.Sgxe6#
    • 1...exf6
      • 2.Scxe6#
  • Tries
    • 1.Sd3+?
      • 1...Kd4+
        • 2.Sxe6#
      • 1...Kxf6+!
    • 1.Sce4+?
      • 1...Kf4
        • 2.Bg3#
        • 2.Rf5#
      • 1...Kd4!
    • 1.Sd7+?
      • 1...Kd4+
        • 2.Sxe6#
      • 1...Kf4+!
    • 1.Sge4+?
      • 1...Kf4
        • 2.Rf5#
      • 1...Kd4!
    • 1.Sf7+?
      • 1...Kd4+
        • 2.Sxe6#
      • 1...Kf4+!
    • 1.Be4?
      • 1...Kd4
        • 2.Scxe6#
        • 2.Sf3#
        • 2.Sgxe6#
      • 1...Kf4
        • 2.Sd3#
        • 2.Scxe6#
        • 2.Sgxe6#
        • 2.Bg3#
      • 1...Kxd6
        • 2.Sa6#
        • 2.Scxe6#
      • 1...Rxd6
        • 2.Sge6#
      • 1...Rxf6
        • 2.Sce6#
      • 1...exd6
        • 2.Sgxe6#
      • 1...exf6
        • 2.Scxe6#
      • 1...Kxf6!
  • Keys
    • 1.Be8!
      • 1...Kd4+
        • 2.Sgxe6#
      • 1...Kf4+
        • 2.Scxe6#
      • 1...Kd5+
        • 2.Scxe6#
      • 1...Kf5+
        • 2.Sgxe6#
      • 1...Kxd6+
        • 2.Scxe6#
      • 1...Kxf6+
        • 2.Sgxe6#
      • 1...Rxd6
        • 2.Sge6#
      • 1...Rxf6
        • 2.Sce6#
      • 1...exd6
        • 2.Sgxe6#
      • 1...exf6
        • 2.Scxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(b);CHECK,S_FLIGHT::S(J),XR(c)
    • R(c);SBLOCK,XP(N)::R(L)+S(K)
    • R(c);SBLOCK,XP(O)::R(I)+S(J)
    • P(d);SBLOCK,XP(N)::R(L)+S(K),XR(c)
    • P(d);SBLOCK,XP(O)::R(I)+S(J),XR(c)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • K(b);CHECK,S_FLIGHT::S(K),XR(c)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XP(O)
    • Try
      • S(J);CHECK
      • Refutation
        • K(b);P_PINS(J),S_FLIGHT
    • Try
      • S(J);CHECK
      • Vars
        • K(b);CHECK,S_FLIGHT::S(K),XR(c)
      • Refutation
        • K(b);CHECK,S_FLIGHT
    • Try
      • S(K);CHECK
      • Vars
        • K(b);P_PINS(K),S_FLIGHT::R1(L)
      • Refutation
        • K(b);P_PINS(K),S_FLIGHT
    • Try
      • S(K);CHECK
      • Vars
        • K(b);CHECK,S_FLIGHT::S(J),XR(c)
      • Refutation
        • K(b);CHECK,S_FLIGHT
    • Try
      • B(P);
      • Vars
        • R(c);SBLOCK,XP(N)::R(L)+S(K)
        • R(c);SBLOCK,XP(O)::R(I)+S(J)
        • P(d);SBLOCK,XP(N)::R(L)+S(K),XR(c)
        • P(d);SBLOCK,XP(O)::R(I)+S(J),XR(c)
      • Refutation
        • K(b);P_PINB(P),S_FLIGHT,XP(O)
  • Actual
    • B(P);
    • Vars
      • K(b);CHECK,S_FLIGHT::S(K),XR(c)
      • K(b);CHECK,S_FLIGHT::S(J),XR(c)
      • K(b);CHECK,P-FLIGHT::R(I)+S(J),XR(c)
      • K(b);CHECK,P-FLIGHT::R(L)+S(K),XR(c)
      • K(b);CHECK,S_FLIGHT,XP(N)::QAB(D)+S(J),XR(c)
      • K(b);CHECK,S_FLIGHT,XP(O)::B(H)+S(K),XR(c)
      • R(c);SBLOCK,XP(N)::R(L)+S(K)
      • R(c);SBLOCK,XP(O)::R(I)+S(J)
      • P(d);SBLOCK,XP(N)::R(L)+S(K),XR(c)
      • P(d);SBLOCK,XP(O)::R(I)+S(J),XR(c)
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