MESON Chess Problem Database

Problem Display
PID: 273137 (1R2K3/1P2P3/1pkB4/n3P3/1Q2P3/1p6/1P6/8 w - - 0 1)

Bajtay, Jozsef

Probleemblad, 1952

1R2K3/1P2P3/1pkB4/n3P3/1Q2P3/1p6/1P6/8

#2

9 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sxb7
      • 2.Rc8#
    • 1...b5
      • 2.Qc5#
  • Tries
    • 1.Kf7?
      • threat
        • 2.e8Q#
        • 2.e8B#
      • 1...Kd7
        • 2.e8Q#
        • 2.e8B#
      • 1...Sxb7
        • 2.e8Q#
        • 2.e8B#
      • 1...Sc4
        • 2.e8Q#
        • 2.e8B#
      • 1...b5!
    • 1.Kd8?
      • threat
        • 2.e8Q#
        • 2.e8B#
      • 1...b5
        • 2.Qc5#
      • 1...Sc4
        • 2.Qxc4#
        • 2.e8Q#
        • 2.e8B#
      • 1...Sxb7+!
    • 1.Kf8?
      • threat
        • 2.e8Q#
        • 2.e8B#
      • 1...Kd7
        • 2.e8Q#
      • 1...Sxb7
        • 2.e8Q#
        • 2.e8B#
      • 1...Sc4
        • 2.e8Q#
        • 2.e8B#
      • 1...b5!
    • 1.Qc3+?
      • 1...Sc4
        • 2.Qxc4#
      • 1...Kb5!
    • 1.Qxa5?
      • threat
        • 2.Qd5#
      • 1...b5
        • 2.Qc7#
        • 2.Qa6#
      • 1...bxa5!
    • 1.Qd4?
      • threat
        • 2.Qd5#
      • 1...b5
        • 2.Qc5#
      • 1...Kb5!
    • 1.e6?
      • 1...Sxb7
        • 2.Rc8#
      • 1...b5
        • 2.Qc5#
      • 1...Sc4!
  • Keys
    • 1.Bc7!
      • threat
        • 2.Qxb6#
      • 1...Kxc7
        • 2.Qd6#
      • 1...Sc4
        • 2.Qxc4#
      • 1...b5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD::QAR2(B),XS(b)
    • S(b);SBLOCK,XP(F)::R(H)
    • P(c);N_GUARD::QAR1(B)
  • Tries
    • Try
      • K(I);S_FLIGHT
      • Threat
        • P=Q
      • Vars
        • K(d);S_FLIGHT::P=Q
        • S(b);XP(F)::P=Q
        • S(b);::P=Q
      • Refutation
        • P(c);
    • Try
      • K(I);P-FLIGHT
      • Threat
        • P=Q
      • Vars
        • P(c);N_GUARD::QAR1(B)
      • Refutation
        • S(b);CHECK,XP(F)
    • Try
      • K(I);P-FLIGHT
      • Threat
        • P=Q
      • Vars
        • K(d);S_FLIGHT::P=Q
        • S(b);XP(F)::P=Q
        • S(b);::P=Q
      • Refutation
        • P(c);
    • Try
      • Q(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR2(B),XS(b)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(B);XS(b)
      • Threat
        • QAB1(B)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • P(c);N_GUARD::QAR1(B)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • P(D);
      • Vars
        • S(b);SBLOCK,XP(F)::R(H)
        • P(c);N_GUARD::QAR1(B)
      • Refutation
        • S(b);
  • Actual
    • B(E);
    • Threat
      • QAR1(B),XP(c)
    • Vars
      • K(d);N_GUARD,P-FLIGHT,XB(E)::QAB1(B)
      • S(b);N_GUARD::QAR2(B),XS(b)
      • P(c);SBLOCK::QAR1(B)
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