MESON Chess Problem Database

Problem Display
PID: 119835 (4b3/3N4/1p2P2K/1P1k4/4R1P1/Q3p3/1nP2rp1/2N5 w - - 0 1)

Jespersen, Karl Lorenz Jesper

Deutsche Schachzeitung, 1914

4b3/3N4/1p2P2K/1P1k4/4R1P1/Q3p3/1nP2rp1/2N5

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc2
      • 2.Sf6#
    • 1...Rd2
      • 2.Sf6#
    • 1...Re2
      • 2.Sf6#
    • 1...Rf6+
      • 2.Sxf6#
    • 1...Sd1
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sa4
      • 2.Qd3#
    • 1...Sc4
      • 2.Qd3#
  • Tries
    • 1.Sa2?
      • threat
        • 2.Sc3#
      • 1...Rf6+
        • 2.Sxf6#
      • 1...Rxc2
        • 2.Sf6#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sa4
        • 2.Qd3#
      • 1...Kxe4!
    • 1.Qb4?
      • threat
        • 2.Sxb6#
        • 2.Re5#
        • 2.Qd4#
      • 1...Rf6+
        • 2.Sxf6#
      • 1...Bxd7
        • 2.Qd4#
      • 1...Rd2
        • 2.Sxb6#
        • 2.Sf6#
        • 2.Re5#
      • 1...Rf5
        • 2.Sxb6#
        • 2.Qd4#
      • 1...Sd3
        • 2.Sxb6#
        • 2.Qd4#
      • 1...Sa4
        • 2.Re5#
        • 2.Qd4#
      • 1...Sc4!
    • 1.c4+?
      • 1...Sxc4
        • 2.Qd3#
      • 1...Kxe4!
  • Keys
    • 1.Se2!
      • threat
        • 2.Sc3#
      • 1...Rf6+
        • 2.Sxf6#
      • 1...Kxe4
        • 2.Qa8#
      • 1...Rxe2
        • 2.Sf6#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sa4
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD,XP(B)::S(I)
    • R(b);N_GUARD::S(I)
    • R(b);CHECK,N_GUARD::S(I),XR(b)
    • S(a);N_GUARD::QAR2(C)
    • S(a);N_GUARD::QAR2(C),XS(a)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • R(b);CHECK,N_GUARD::S(I),XR(b)
        • R(b);N_GUARD,XP(B)::S(I)
        • S(a);N_GUARD::QAR2(C)
      • Refutation
        • K(e);S_FLIGHT,XR(D)
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • R(b);CHECK,N_GUARD::S(I),XR(b)
        • B(g);XS(I)::QAR1(C)
      • Refutation
        • S(a);
    • Try
      • P(B);CHECK
      • Vars
        • S(a);XP(B)::QAR2(C)
      • Refutation
        • K(e);S_FLIGHT,XR(D)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • R(b);CHECK,N_GUARD::S(I),XR(b)
      • K(e);S_FLIGHT,XR(D)::QAB(C)
      • R(b);N_GUARD,XS(A)::S(I)
      • S(a);N_GUARD::QAR2(C)
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