MESON Chess Problem Database

Problem Display
PID: 159992 (Kn6/8/2p5/n2B3R/N2kp1N1/2Rp1p2/3b3B/7Q w - - 0 1)

Schonholzer, Andreas

1st HM., Bilten, 2005

Kn6/8/2p5/n2B3R/N2kp1N1/2Rp1p2/3b3B/7Q

#2

8 + 8

15527 schachkunst (1997-2010) (Hoffmann) 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
    • 1...Sb7
      • 2.Rc4#
    • 1...f2
      • 2.Qxe4#
    • 1...cxd5
      • 2.Be5#
  • Tries
    • 1.Bg1+?
      • 1...Be3
        • 2.Bxe3#
      • 1...f2
        • 2.Qxe4#
      • 1...e3!
    • 1.Rc5?
      • threat
        • 2.Be5#
      • 1...Bf4
        • 2.Qa1#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Sd7!
    • 1.Qxf3?
      • threat
        • 2.Qxe4#
        • 2.Qf6#
      • 1...cxd5
        • 2.Be5#
        • 2.Qf6#
      • 1...Bg5
        • 2.Qxe4#
      • 1...Bf4
        • 2.Qxe4#
      • 1...Sc4
        • 2.Rxc4#
        • 2.Qxe4#
      • 1...Sd7
        • 2.Qxe4#
      • 1...e3
        • 2.Be5#
        • 2.Qe4#
        • 2.Qf4#
        • 2.Qf6#
      • 1...exf3!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Rc4#
      • 1...Bxc3
        • 2.Qxc3#
      • 1...cxd5
        • 2.Be5#
      • 1...Bg5
        • 2.Rc5#
      • 1...Sc4
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(f);N_GUARD::R1(C)
    • S(f);N_GUARD::R1(C),XS(f)
    • P(c);OGATE::QAR1(A),XP(e)
    • P(g);SBLOCK,XB(F)::B(B)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::B(B),XB(a)
        • P(c);OGATE,P_SPINP(c)::QAR1(A),XP(e)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • R(C);
      • Threat
        • B(B)
      • Vars
        • B(a);N_GUARD::QAB(A)
        • S(f);N_GUARD::R1(C),XS(f)
      • Refutation
        • S(h);
    • Try
      • Q(A);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAR1(A),XP(e)
        • S(h);::QAR1(A),XP(e)
      • Refutation
        • P(e);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+R(C),DCHECK
    • Vars
      • B(a);OGATE,P_SPINB(a),XR(C)::QAB1(A),XB(a)
      • P(g);SBLOCK,XB(F)::B(B)
      • B(a);N_GUARD::QAB(A)+R(C)
      • S(f);::QAB(A)+R(C),DCHECK,XS(f)
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