MESON Chess Problem Database

Problem Display
PID: 250325 (7b/1ppRNQ2/2bn2p1/3p1pP1/3kp3/1PR5/3K1P1B/1B6 w - - 0 1)

Simpson, J

Manchester Evening News, 1923

(First published on Sat Jan 13 1923)

7b/1ppRNQ2/2bn2p1/3p1pP1/3kp3/1PR5/3K1P1B/1B6

#2

10 + 10

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba4
      • 2.Qxd5#
    • 1...Bb5
      • 2.Qxd5#
    • 1...Bxd7
      • 2.Qxd5#
    • 1...Bf6
      • 2.Qxf6#
    • 1...Bg7
      • 2.Qxg7#
    • 1...Sc4+
      • 2.Rxc4#
    • 1...Sb5
      • 2.Rc4#
    • 1...Sxf7
      • 2.Rc4#
    • 1...Sc8
      • 2.Rc4#
    • 1...Se8
      • 2.Rc4#
    • 1...e3+
      • 2.fxe3#
    • 1...b5
      • 2.Sxc6#
    • 1...b6
      • 2.Sxc6#
  • Tries
    • 1.Sxf5+?
      • 1...Sxf5
        • 2.Rc4#
      • 1...gxf5!
    • 1.Rc4+?
      • 1...dxc4
        • 2.Qxc4#
      • 1...Sxc4+!
    • 1.Rxc6?
      • threat
        • 2.Qxd5#
      • 1...Sc4+
        • 2.Rxc4#
      • 1...e3+
        • 2.fxe3#
      • 1...Sxf7
        • 2.Rc4#
        • 2.Rxd5#
      • 1...bxc6!
    • 1.Qf8?
      • threat
        • 2.Qxh8#
      • 1...Sc4+
        • 2.Rxc4#
      • 1...e3+
        • 2.fxe3#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Bg7
        • 2.Qxg7#
      • 1...Sf7
        • 2.Rc4#
      • 1...Se8
        • 2.Rc4#
      • 1...Be5!
  • Keys
    • 1.Bf4!
      • 1...Sc4+
        • 2.Rxc4#
      • 1...e3+
        • 2.fxe3#
      • 1...Bxd7
        • 2.Qxd5#
      • 1...Sxf7
        • 2.Rc4#
      • 1...Be5
        • 2.Be3#
      • 1...Ba4
        • 2.Qxd5#
      • 1...Bb5
        • 2.Qxd5#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Bg7
        • 2.Qxg7#
      • 1...Sb5
        • 2.Rc4#
      • 1...Sc8
        • 2.Rc4#
      • 1...Se8
        • 2.Rc4#
      • 1...b5
        • 2.Sxc6#
      • 1...b6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(e);N_GUARD::QAR1(J),XP(c)
    • B(e);N_GUARD,XR(H)::QAR1(J),XP(c)
    • B(j);N_GUARD::QAB(J),XB(j)
    • S(f);CHECK,N_GUARD,P_SPINP(c)::R1(F),XS(f)
    • S(f);N_GUARD,P_SPINP(c)::R1(F)
    • S(f);N_GUARD,P_SPINP(c),XQ(J)::R1(F)
    • P(b);CHECK,OGATE::P(C),XP(b)
    • P(h);N_GUARD::S(I),XB(e)
  • Tries
    • Try
      • S(I);CHECK,XP(d)
      • Vars
        • S(f);P_SPINP(c),XS(I)::R1(F)
      • Refutation
        • P(g);XS(I)
    • Try
      • R(F);CHECK
      • Vars
        • P(c);OGATE,P_SPINS(f),XR(F)::QAR1(J),XP(c)
      • Refutation
        • S(f);CHECK,P_SPINP(c),XR(F)
    • Try
      • R(F);XB(e)
      • Threat
        • QAR1(J),XP(c)
      • Vars
        • S(f);CHECK,N_GUARD,P_SPINP(c)::R1(F),XS(f)
        • P(b);CHECK,OGATE::P(C),XP(b)
      • Refutation
        • P(h);XR(F)
    • Try
      • Q(J);
      • Threat
        • QAB(J),XB(j)
      • Vars
        • S(f);CHECK,N_GUARD,P_SPINP(c)::R1(F),XS(f)
        • P(b);CHECK,OGATE::P(C),XP(b)
        • B(j);N_GUARD::QAB(J),XB(j)
        • S(f);N_GUARD,P_SPINP(c)::R1(F)
      • Refutation
        • B(j);
  • Actual
    • B(D);
    • Vars
      • S(f);CHECK,N_GUARD,P_SPINP(c)::R1(F),XS(f)
      • P(b);CHECK,OGATE::P(C),XP(b)
      • B(e);N_GUARD,XR(H)::QAR1(J),XP(c)
      • S(f);N_GUARD,P_SPINP(c),XQ(J)::R1(F)
      • B(j);SBLOCK::B(D)
      • B(e);N_GUARD::QAR1(J),XP(c)
      • B(j);N_GUARD::QAB(J),XB(j)
      • S(f);N_GUARD,P_SPINP(c)::R1(F)
      • P(h);N_GUARD::S(I),XB(e)
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