MESON Chess Problem Database

Problem Display
PID: 230112 (5K2/6QP/5R2/2ppp3/3Pk3/2rrp3/3b3n/8 w - - 0 1)

Jespersen, Karl Lorenz Jesper

Tidskrift for Schack, 1913

5K2/6QP/5R2/2ppp3/3Pk3/2rrp3/3b3n/8

#2

5 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Rf4#
    • 1...Rxd4
      • 2.Qg6#
    • 1...Sf1
      • 2.Qg4#
    • 1...Sf3
      • 2.Qg4#
    • 1...Sg4
      • 2.Qxg4#
    • 1...cxd4
      • 2.Qg6#
    • 1...exd4
      • 2.Qe7#
  • Tries
    • 1.Rf2?
      • threat
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Rf4#
      • 1...Rxd4
        • 2.Qg6#
      • 1...cxd4
        • 2.Qg6#
      • 1...exd4
        • 2.Qe7#
      • 1...Sf3
        • 2.Qg4#
      • 1...Sg4
        • 2.Qxg4#
      • 1...exf2!
    • 1.Rf7?
      • threat
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Rf4#
      • 1...Rxd4
        • 2.Qg6#
      • 1...cxd4
        • 2.Qg6#
      • 1...Sf3
        • 2.Qg4#
      • 1...Sg4
        • 2.Qxg4#
      • 1...exd4!
    • 1.Qg2+?
      • 1...Sf3
        • 2.Qg4#
      • 1...Kxd4!
    • 1.Qg3?
      • threat
        • 2.Qxe5#
      • 1...Rxd4
        • 2.Qg6#
      • 1...cxd4
        • 2.Qg6#
      • 1...exd4
        • 2.Qf4#
      • 1...Sf3
        • 2.Qg4#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Kxd4!
    • 1.Qg5?
      • threat
        • 2.Qxe5#
      • 1...Rxd4
        • 2.Qf5#
        • 2.Qg6#
      • 1...cxd4
        • 2.Qf5#
        • 2.Qg6#
      • 1...exd4
        • 2.Rf4#
        • 2.Qf4#
        • 2.Qf5#
      • 1...Sf3
        • 2.Qg4#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Kxd4!
  • Keys
    • 1.Rf1!
      • threat
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Rf4#
      • 1...Rxd4
        • 2.Qg6#
      • 1...Sxf1
        • 2.Qg4#
      • 1...cxd4
        • 2.Qg6#
      • 1...exd4
        • 2.Qe7#
      • 1...Sf3
        • 2.Qg4#
      • 1...Sg4
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(f);P-FLIGHT,XP(A)::R(B)
    • R(d);SBLOCK,XP(A)::QAB(C)
    • S(b);N_GUARD::QAR2(C)
    • S(b);N_GUARD::QAR2(C),XS(b)
    • P(g);SBLOCK,XP(A)::QAB(C)
    • P(i);OGATEB,SBLOCK,XP(A)::QAR(C)
  • Tries
    • Try
      • R(B);
      • Threat
        • QAR1(C),XP(i)
      • Vars
        • K(f);P-FLIGHT,P_SPINP(i),XP(A)::R(B)
        • R(d);SBLOCK,XP(A)::QAB(C)
        • P(g);SBLOCK,XP(A)::QAB(C)
        • P(i);OGATEB,SBLOCK,XP(A)::QAR(C)
        • S(b);N_GUARD::QAR2(C)
        • S(b);N_GUARD::QAR2(C),XS(b)
      • Refutation
        • P(e);XR(B)
    • Try
      • R(B);
      • Threat
        • QAR1(C),XP(i)
      • Vars
        • K(f);P-FLIGHT,P_SPINP(i),XP(A)::R(B)
        • R(d);SBLOCK,XP(A)::QAB(C)
        • P(g);SBLOCK,XP(A)::QAB(C)
        • S(b);N_GUARD::QAR2(C)
        • S(b);N_GUARD::QAR2(C),XS(b)
      • Refutation
        • P(i);XP(A)
    • Try
      • Q(C);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR2(C)
      • Refutation
        • K(f);P-FLIGHT,XP(A)
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(i)
      • Vars
        • R(d);SBLOCK,XP(A)::QAB(C)
        • P(g);SBLOCK,XP(A)::QAB(C)
        • P(i);N_GUARD,SBLOCK,XP(A)::QAR1(C)
        • S(b);N_GUARD::QAR2(C)
        • S(b);N_GUARD::QAR2(C),XS(b)
      • Refutation
        • K(f);P-FLIGHT,XP(A)
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(i)
      • Vars
        • S(b);N_GUARD::QAR2(C)
        • S(b);N_GUARD::QAR2(C),XS(b)
      • Refutation
        • K(f);P-FLIGHT,XP(A)
  • Actual
    • R(B);
    • Threat
      • QAR1(C),XP(i)
    • Vars
      • K(f);P-FLIGHT,P_SPINP(i),XP(A)::R(B)
      • R(d);SBLOCK,XP(A)::QAB(C)
      • S(b);N_GUARD,XR(B)::QAR2(C)
      • P(g);SBLOCK,XP(A)::QAB(C)
      • P(i);OGATEB,SBLOCK,XP(A)::QAR(C)
      • S(b);N_GUARD::QAR2(C)
      • S(b);N_GUARD::QAR2(C),XS(b)
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