MESON Chess Problem Database

Problem Display
PID: 92200 (2Q3K1/1p5p/1B4p1/2P4r/prkN4/3R4/qp6/5B2 w - - 0 1)

Gamnitzer, Camillo

Schmoll, Werner

Schach-Aktiv, 1987

2Q3K1/1p5p/1B4p1/2P4r/prkN4/3R4/qp6/5B2

#2

7 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qe6#
    • 1...Rh1
      • 2.Qe6#
    • 1...Rh2
      • 2.Qe6#
    • 1...Rh3
      • 2.Qe6#
    • 1...Rh4
      • 2.Qe6#
    • 1...Rxc5
      • 2.Qxc5#
    • 1...Rh6
      • 2.Qe6#
    • 1...g5
      • 2.Qe6#
  • Tries
    • 1.Rd1+?
      • 1...Kd5
        • 2.Qe6#
      • 1...Kc3+!
    • 1.Rd2+?
      • 1...Kd5
        • 2.Qe6#
      • 1...Kc3+!
    • 1.Re3+?
      • 1...Kd5
        • 2.Qd7#
        • 2.Qd8#
      • 1...Kxd4+!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sd6#
      • 1...Kxb5+
        • 2.Rb3#
      • 1...Rxb5
        • 2.Qg4#
      • 1...Rb3
        • 2.Rd4#
      • 1...Rd5
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • K(e);S_FLIGHT::QAB1(F)
    • R(f);N_GUARD::QAB(F)
    • R(f);OGATE,P_SPINR(f),XP(D)::QAR1(F),XR(f)
    • P(g);S_CUTR(f)::QAB(F)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(F)
      • Refutation
        • K(e);CHECK,P-FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(F)
      • Refutation
        • K(e);CHECK,P-FLIGHT
    • Try
      • R(B);CHECK
      • Refutation
        • K(e);CHECK,P-FLIGHT,XS(C)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(e);CHECK,S_FLIGHT,XS(C)::B(A)+R(B)
      • R(d);SBLOCK,XS(C)::QAR(F)
      • R(d);SBLOCK::B(A)+R(B),DCHECK
      • R(f);SBLOCK::B(A)+R(B),DCHECK
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