MESON Chess Problem Database

Problem Display
PID: 211123 (8/2r5/3N4/3p2Q1/2Pkp3/B7/1P2P3/1K6 w - - 0 1)

Gottstein, Claudius

Schach-Report, 1996

8/2r5/3N4/3p2Q1/2Pkp3/B7/1P2P3/1K6

#2

7 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Sb5#
    • 1...e3
      • 2.Qf4#
      • 2.Qf6#
      • 2.Qxd5#
    • 1...dxc4
      • 2.Sb5#
  • Tries
    • 1.Kc2?
      • threat
        • 2.e3#
      • 1...e3
        • 2.Qf4#
        • 2.Qf6#
        • 2.Qxd5#
      • 1...Rxc4+!
    • 1.Qg3?
      • threat
        • 2.Qc3#
      • 1...Rxc4
        • 2.Sb5#
        • 2.Sf5#
      • 1...e3
        • 2.Qf4#
      • 1...dxc4!
    • 1.b3?
      • threat
        • 2.Sb5#
      • 1...Kc3
        • 2.Qe3#
      • 1...Rc5
        • 2.Bb2#
      • 1...e3
        • 2.Qf6#
      • 1...Rb7!
  • Keys
    • 1.b4!
      • threat
        • 2.Bb2#
      • 1...Kc3
        • 2.Qe3#
      • 1...Rxc4
        • 2.Sb5#
      • 1...dxc4
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK,XP(E)::S(G)
    • P(c);SBLOCK,XP(E)::S(G)
  • Tries
    • Try
      • K(A);P_SPINP(E),S_FLIGHT
      • Threat
        • P(C)
      • Refutation
        • R(d);CHECK,XP(E)
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Vars
        • P(b);OGATEB::QAR2(F)
      • Refutation
        • P(c);XP(E)
    • Try
      • P(B);
      • Threat
        • S(G)
      • Vars
        • K(a);S_FLIGHT::QAR2(F)
        • R(d);SBLOCK::B(D)
        • P(b);SBLOCK::QAB(F)
      • Refutation
        • R(d);P_PINP(B)
  • Actual
    • P(B);
    • Threat
      • B(D)
    • Vars
      • K(a);S_FLIGHT::QAR2(F)
      • R(d);SBLOCK,XP(E)::S(G)
      • P(c);SBLOCK,XP(E)::S(G)
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