MESON Chess Problem Database

Problem Display
PID: 190428 (8/2K5/1n1NN3/3kpP2/2n1R3/Q7/5bP1/8 w - - 0 1)

Schwarz, Klaus

Heilbronner Stimme, 2001

(First published on Sat Nov 17 2001)

8/2K5/1n1NN3/3kpP2/2n1R3/Q7/5bP1/8

#2

7 + 5

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qc5#
      • 2.Qd3#
    • 1...Bg3
      • 2.Qc5#
      • 2.Qd3#
    • 1...Bh4
      • 2.Qc5#
      • 2.Qd3#
    • 1...Bc5
      • 2.Qxc5#
    • 1...Se3
      • 2.Qc5#
      • 2.Qd3#
      • 2.Qa5#
    • 1...Sd7
      • 2.Qa8#
    • 1...Sa8+
      • 2.Qxa8#
    • 1...Sc8
      • 2.Qa8#
  • Tries
    • 1.Rd4+?
      • 1...exd4
        • 2.Qc5#
      • 1...Bxd4!
    • 1.Qf3?
      • threat
        • 2.Rd4#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Sa8+!
    • 1.Qa5+?
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sxa5!
  • Keys
    • 1.Se8!
      • threat
        • 2.Sf6#
      • 1...Sa8+
        • 2.Qxa8#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Bh4
        • 2.Qd3#
      • 1...Sd7
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAR1(B),XB(a)
    • S(e);N_GUARD::QAB(B)
    • S(e);CHECK,N_GUARD::QAB(B),XS(e)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • P(d);XR(C)::QAR1(B)
      • Refutation
        • B(a);XR(C)
    • Try
      • Q(B);
      • Threat
        • QAB(B)+R(C),DCHECK
      • Vars
        • B(a);::QAB(B)+R(C),DCHECK,XB(a)
      • Refutation
        • S(e);CHECK
    • Try
      • Q(B);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(B),XB(a)
      • Refutation
        • S(b);XQ(B)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • S(e);CHECK,N_GUARD::QAB(B),XS(e)
      • K(c);OGATEB,S_FLIGHT,XR(C)::QAB1(B)
      • B(a);N_GUARD::QAR2(B)
      • S(e);N_GUARD::QAB(B)
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