MESON Chess Problem Database

Problem Display
PID: 56546 (1Bn5/2N1R3/K1N2ppb/3P1kP1/2R4P/1p6/3prp1n/3BQb2 w - - 0 1)

Bruch, Wieland

2nd HM., Die Schwalbe, 2004

1Bn5/2N1R3/K1N2ppb/3P1kP1/2R4P/1p6/3prp1n/3BQb2

#2

11 + 11

23 Die Schwalbe 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qxe4#
    • 1...Re6
      • 2.Qxe6#
    • 1...fxg5
      • 2.Rf7#
  • Tries
    • 1.Se8?
      • threat
        • 2.Rf4#
      • 1...Rxe1
        • 2.Sd4#
      • 1...Rxe7
        • 2.Sd4#
      • 1...Bxg5
        • 2.Sg7#
      • 1...fxg5
        • 2.Rf7#
      • 1...Re3
        • 2.Sd4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Re6
        • 2.Qxe6#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Re5!
    • 1.Bc2+?
      • 1...Re4
        • 2.Qxe4#
      • 1...bxc2!
    • 1.Qxf2+?
      • 1...Sf3
        • 2.Qxf3#
      • 1...Rxf2!
    • 1.Qxe2?
      • threat
        • 2.Qe4#
        • 2.Qe6#
      • 1...fxg5
        • 2.Rf7#
        • 2.Qe5#
        • 2.Qe6#
      • 1...Bg2
        • 2.Qe6#
      • 1...Sd6
        • 2.Qe6#
      • 1...Bxe2!
  • Keys
    • 1.Se6!
      • threat
        • 2.Rf4#
      • 1...Rxe1
        • 2.Sed4#
      • 1...Rxe6
        • 2.Qxe6#
      • 1...Bxg5
        • 2.Sg7#
      • 1...fxg5
        • 2.Rf7#
      • 1...Re3
        • 2.Sed4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Re5
        • 2.Scd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE,P_PINR(C)::QAB1(B),XR(c)
    • R(c);OGATE,P_PINR(C),P_PINS(H)::QAB1(B),XR(c)
    • P(h);OGATEB,XP(F)::R(J)
  • Tries
    • Try
      • S(I);
      • Threat
        • R1(C)
      • Vars
        • R(c);P_PINR(C),XQ(B)::S(H)
        • R(c);P_PINR(C),XR(J)::S(H)
        • B(j);N_GUARD,XP(F)::S(I)
        • P(h);OGATEB,XP(F)::R(J)
        • R(c);P_PINR(C)::S(H)
        • R(c);OGATE,P_PINR(C)::QAB1(B),XR(c)
        • R(c);OGATE,P_PINR(C),P_PINS(H)::QAB1(B),XR(c)
        • S(k);N_GUARD::S(I),XS(k)
      • Refutation
        • R(c);P_PINR(C)
    • Try
      • B(A);CHECK
      • Vars
        • R(c);OGATE,P_PINR(C),P_SPINR(c)::QAB1(B),XR(c)
      • Refutation
        • P(f);XB(A)
    • Try
      • Q(B);CHECK,XP(d)
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAR2(B),XS(e)
      • Refutation
        • R(c);P_PINR(C),XQ(B)
    • Try
      • Q(B);XR(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAB1(B)
        • S(k);::QAB1(B)
      • Refutation
        • B(a);P_PINR(C),XQ(B)
  • Actual
    • S(I);
    • Threat
      • R1(C)
    • Vars
      • R(c);P_PINR(C),XQ(B)::S(I)
      • R(c);OGATE,P_PINR(C),P_PINS(H),XS(I)::QAB1(B),XR(c)
      • B(j);N_GUARD,XP(F)::S(I)
      • P(h);OGATEB,XP(F)::R(J)
      • R(c);P_PINR(C)::S(I)
      • R(c);OGATE,P_PINR(C)::QAB1(B),XR(c)
      • R(c);P_PINR(C)::S(H)
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