MESON Chess Problem Database

Problem Display
PID: 175007 (K1N5/8/N4B2/3k4/P3nR2/2n5/2P1R3/7Q w - - 0 1)

Jespersen, Karl Lorenz Jesper

San Francisco Chronicle, 1901

K1N5/8/N4B2/3k4/P3nR2/2n5/2P1R3/7Q

#2

9 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Sb6#
    • 1...Sb1
      • 2.Qxe4#
    • 1...Sd1
      • 2.Qxe4#
    • 1...Sa2
      • 2.Qxe4#
    • 1...Sxe2
      • 2.Qxe4#
    • 1...Sxa4
      • 2.Qxe4#
    • 1...Sb5
      • 2.Qxe4#
  • Tries
    • 1.Kb7?
      • 1...Kc4
        • 2.Sb6#
      • 1...Sxe2
        • 2.Qxe4#
      • 1...Sxa4
        • 2.Qxe4#
      • 1...Sb1
        • 2.Qxe4#
      • 1...Sd1
        • 2.Qxe4#
      • 1...Sa2
        • 2.Qxe4#
      • 1...Sb5
        • 2.Qxe4#
      • 1...Ke6!
    • 1.Rd2+?
      • 1...Kc4
        • 2.Sb6#
        • 2.Sd6#
        • 2.Rd4#
      • 1...Kc6
        • 2.Rd6#
      • 1...Ke6!
    • 1.Rexe4?
      • threat
        • 2.Re5#
      • 1...Sxe4
        • 2.Qxe4#
      • 1...Kc6!
  • Keys
    • 1.Qh7!
      • 1...Kc4
        • 2.Sb6#
      • 1...Kc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Sc7#
      • 1...Sxe2
        • 2.Qxe4#
      • 1...Sxa4
        • 2.Qxe4#
      • 1...Sxf6
        • 2.Qb7#
      • 1...Sb1
        • 2.Qxe4#
      • 1...Sd1
        • 2.Qxe4#
      • 1...Sa2
        • 2.Qxe4#
      • 1...Sb5
        • 2.Qxe4#
      • 1...Sd2
        • 2.Qb7#
        • 2.Qd7#
      • 1...Sf2
        • 2.Qb7#
        • 2.Qd7#
      • 1...Sg3
        • 2.Qb7#
        • 2.Qd7#
      • 1...Sc5
        • 2.Sb4#
      • 1...Sg5
        • 2.Qb7#
        • 2.Qd7#
      • 1...Sd6
        • 2.Se7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::S(I)
    • S(a);N_GUARD::QAB1(A),XS(b)
    • S(a);N_GUARD,XR(C)::QAB1(A),XS(b)
    • S(a);N_GUARD,XP(D)::QAB1(A),XS(b)
  • Tries
    • Try
      • K(H);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::S(I)
        • S(a);N_GUARD,XR(C)::QAB1(A),XS(b)
        • S(a);N_GUARD,XP(D)::QAB1(A),XS(b)
        • S(a);N_GUARD::QAB1(A),XS(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::R1(C)
      • Refutation
        • K(c);N_SPINS(b),S_FLIGHT
    • Try
      • R(C);XS(b)
      • Threat
        • QAB(A)+R(C),DCHECK
      • Vars
        • S(a);OGATE,P_SPINS(a),XR(C)::QAB1(A),XS(a)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);N_PINS(b)
    • Vars
      • K(c);P_SPINS(b),S_FLIGHT::S(I)
      • K(c);S_FLIGHT::QAB1(A)
      • K(c);P_SPINS(b),S_FLIGHT::S(F)
      • S(a);N_GUARD,XR(C)::QAB1(A),XS(b)
      • S(a);N_GUARD,XP(D)::QAB1(A),XS(b)
      • S(b);XB(G)::QAB(A)
      • S(a);N_GUARD::QAB1(A),XS(b)
      • S(b);SBLOCK::S(F)
      • S(b);SBLOCK::S(I)
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