MESON Chess Problem Database

Problem Display
PID: 269304 (2B5/8/8/7b/6R1/2N2kpp/3P4/4K1BR w K - 0 1)

Ott, Roland

Zurcher Woche, 1966

2B5/8/8/7b/6R1/2N2kpp/3P4/4K1BR

#2

7 + 4

6490 yacpdb 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Kg2
      • 2.Bb7#
    • 1...g2
      • 2.Rxh3#
  • Tries
    • 1.Be3?
      • threat
        • 2.0-0#
      • 1...Kg2
        • 2.Bb7#
      • 1...g2
        • 2.Rxh3#
      • 1...h2!
    • 1.Bd4?
      • threat
        • 2.0-0#
      • 1...Kg2
        • 2.Bb7#
      • 1...g2
        • 2.Rxh3#
      • 1...h2!
    • 1.Bc5?
      • threat
        • 2.0-0#
      • 1...Kg2
        • 2.Bb7#
      • 1...g2
        • 2.Rxh3#
      • 1...h2!
    • 1.Bb6?
      • threat
        • 2.0-0#
      • 1...Kg2
        • 2.Bb7#
      • 1...g2
        • 2.Rxh3#
      • 1...h2!
    • 1.Ba7?
      • threat
        • 2.0-0#
      • 1...Kg2
        • 2.Bb7#
      • 1...g2
        • 2.Rxh3#
      • 1...h2!
    • 1.Rxh3?
      • threat
        • 2.Rhxg3#
      • 1...Kg2
        • 2.Rgxg3#
      • 1...Bxg4!
  • Keys
    • 1.Bh2!
      • threat
        • 2.0-0#
      • 1...Kg2
        • 2.Bb7#
      • 1...gxh2
        • 2.Rf1#
      • 1...g2
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,P_SPINP(b),S_FLIGHT::B(G)
    • P(b);OGATEB::R(C),XP(c)
  • Tries
    • Try
      • B(B);
      • Threat
        • 0-0
      • Vars
        • K(a);N_GUARD,P_SPINP(b),S_FLIGHT::B(G)
        • P(b);OGATEB::R(C),XP(c)
      • Refutation
        • P(c);
    • Try
      • B(B);
      • Threat
        • 0-0
      • Vars
        • K(a);N_GUARD,P_SPINP(b),S_FLIGHT::B(G)
        • P(b);OGATEB::R(C),XP(c)
      • Refutation
        • P(c);
    • Try
      • B(B);
      • Threat
        • 0-0
      • Vars
        • K(a);N_GUARD,P_SPINP(b),S_FLIGHT::B(G)
        • P(b);OGATEB::R(C),XP(c)
      • Refutation
        • P(c);
    • Try
      • B(B);
      • Threat
        • 0-0
      • Vars
        • K(a);N_GUARD,P_SPINP(b),S_FLIGHT::B(G)
        • P(b);OGATEB::R(C),XP(c)
      • Refutation
        • P(c);
    • Try
      • B(B);
      • Threat
        • 0-0
      • Vars
        • K(a);N_GUARD,P_SPINP(b),S_FLIGHT::B(G)
        • P(b);OGATEB::R(C),XP(c)
      • Refutation
        • P(c);
    • Try
      • R(C);P_PINP(b),XP(c)
      • Threat
        • R1(C),XP(b)
      • Vars
        • K(a);N_GUARD,S_FLIGHT::R1(F),XP(b)
      • Refutation
        • B(d);XR(F)
  • Actual
    • B(B);
    • Threat
      • 0-0
    • Vars
      • K(a);N_GUARD,P_SPINP(b),S_FLIGHT::B(G)
      • P(b);XB(B)::R(C)
      • P(b);SBLOCK::R1(F)
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Developed and maintained by Brian Stephenson.
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