MESON Chess Problem Database

Problem Display
PID: 82341 (1B1q4/6Q1/bp6/R2nNNP1/R1r1Pk1p/8/3P1K2/7B w - - 0 1)

Ahues, Herbert Siegfried Oskar

Rochade Europa, 1993

1B1q4/6Q1/bp6/R2nNNP1/R1r1Pk1p/8/3P1K2/7B

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.dxe3#
  • Tries
    • 1.Sg6+?
      • 1...Kxg5
        • 2.Sf4#
      • 1...Kg4!
    • 1.Sg3?
      • threat
        • 2.Se2#
        • 2.Sh5#
      • 1...Qxg5
        • 2.Se2#
      • 1...Rxa4
        • 2.Sh5#
      • 1...Rxe4
        • 2.Rxe4#
      • 1...Qe8
        • 2.Se2#
      • 1...Qh8
        • 2.Se2#
      • 1...Rc1
        • 2.Sh5#
      • 1...Rc2
        • 2.Sh5#
      • 1...Rc3
        • 2.Sh5#
      • 1...Rb4
        • 2.Sh5#
      • 1...Rd4
        • 2.Sh5#
      • 1...Rc5
        • 2.Sh5#
      • 1...Rc6
        • 2.Sh5#
      • 1...Rc7
        • 2.Sh5#
      • 1...Rc8
        • 2.Sh5#
      • 1...Sc3
        • 2.Sh5#
      • 1...Sf6
        • 2.Se2#
      • 1...hxg3+!
    • 1.Sh6?
      • threat
        • 2.Sd3#
      • 1...Sc7
        • 2.Sg6#
      • 1...Rc7!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sd3#
      • 1...Sxe3
        • 2.dxe3#
      • 1...Rc7
        • 2.Sg2#
      • 1...Sc7
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(d);OGATE::P(B),XS(d)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(b);S_FLIGHT,XP(I)::QAR(J)+S(G)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);XP(I)::S(H)
        • R(a);XR(D)::S(H)
        • R(a);OGATE,P_SPINR(a),XP(E)::R1(D),XR(a)
        • Q(g);::S(H)
        • R(a);::S(H)
        • R(a);P_PINP(B)::S(H)
        • S(d);::S(H)
      • Refutation
        • P(c);CHECK,XS(H)
    • Try
      • S(H);
      • Threat
        • B(K)+S(G),DCHECK
      • Vars
        • S(d);::S(G)
      • Refutation
        • R(a);
  • Actual
    • S(H);
    • Threat
      • B(K)+S(G),DCHECK
    • Vars
      • S(d);OGATE,XS(H)::P(B),XS(d)
      • R(a);::S(H)
      • S(d);::S(G)
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