MESON Chess Problem Database

Problem Display
PID: 223410 (3B4/8/3P4/2P5/3k4/4N3/5P2/1Q2K3 w - - 0 1)

Rosner, J

New York Tid-Bits, 1886

3B4/8/3P4/2P5/3k4/4N3/5P2/1Q2K3

#2

7 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Bf6#
    • 1...Kxc5
      • 2.Qb6#
  • Tries
    • 1.Kd1?
      • 1...Kc3
        • 2.Bf6#
      • 1...Kxc5
        • 2.Qb6#
      • 1...Ke5!
    • 1.Kd2?
      • 1...Kxc5
        • 2.Qb6#
      • 1...Ke5!
    • 1.Ke2?
      • 1...Kc3
        • 2.Bf6#
      • 1...Kxc5
        • 2.Qb6#
      • 1...Ke5!
    • 1.Ba5?
      • 1...Kxc5
        • 2.Qb6#
      • 1...Ke5!
    • 1.Qb4+?
      • 1...Kd3
        • 2.Qc4#
      • 1...Ke5!
    • 1.f4?
      • 1...Kc3
        • 2.Bf6#
      • 1...Kxc5
        • 2.Qb6#
      • 1...Kxe3!
    • 1.d7?
      • 1...Kc3
        • 2.Bf6#
      • 1...Kxc5
        • 2.Qb6#
      • 1...Ke5!
  • Keys
    • 1.f3!
      • 1...Kc3
        • 2.Bf6#
      • 1...Kxe3
        • 2.Qe4#
      • 1...Kxc5
        • 2.Qb6#
      • 1...Ke5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(G)
    • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(G)
        • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(G)
        • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(G);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(C);
      • Vars
        • K(a);S_FLIGHT::B(G)
        • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • P(F);
      • Vars
        • K(a);S_FLIGHT::B(G)
        • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(C);
    • Vars
      • K(a);S_FLIGHT::B(G)
      • K(a);S_FLIGHT,XS(D)::QAR1(A)
      • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(A)
      • K(a);S_FLIGHT::QAR1(A)
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