MESON Chess Problem Database

Problem Display
PID: 135030 (3b4/5K2/2N1Rp2/3k1r2/1PpB2p1/2r2P1Q/3q2N1/n2R3B w - - 0 1)

Paslack, Rainer

Probleemblad, 2009

3b4/5K2/2N1Rp2/3k1r2/1PpB2p1/2r2P1Q/3q2N1/n2R3B

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Rxd4#
    • 1...gxf3
      • 2.Qxf5#
    • 1...g3
      • 2.Qxf5#
  • Tries
    • 1.Bxc3?
      • threat
        • 2.Se3#
        • 2.Rxd2#
      • 1...Qxd1
        • 2.Se3#
      • 1...Rxf3
        • 2.Se3#
        • 2.Sf4#
      • 1...Qd3
        • 2.Se3#
      • 1...Qd4
        • 2.Se3#
        • 2.Rxd4#
      • 1...Rf4
        • 2.Se3#
        • 2.Sxf4#
      • 1...Re5
        • 2.Sf4#
        • 2.Rxd2#
      • 1...Bb6
        • 2.Se7#
      • 1...Sb3
        • 2.Se3#
      • 1...Sc2!
    • 1.f4?
      • threat
        • 2.Se3#
      • 1...Qxg2
        • 2.Bxc3#
      • 1...Qe3
        • 2.Sxe3#
      • 1...Re3
        • 2.Sxe3#
      • 1...Rf3!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Rd6#
      • 1...Rcxf3
        • 2.Se3#
      • 1...Rfxf3
        • 2.Sf4#
      • 1...gxf3
        • 2.Qxf5#
      • 1...Bc7
        • 2.Se7#
      • 1...Be7
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • Q(b);OGATE,P_SPINQ(b),XB(G)::R1(A),XQ(b)
    • P(e);OGATE,XP(D)::QAR2(E),XR(g)
    • P(e);OGATE::QAR2(E),XR(g)
  • Tries
    • Try
      • B(G);P_PINQ(b),XR(c)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);N_SPINQ(b),XR(A)::S(C)
        • Q(b);::S(C)
        • B(i);N_GUARD::S(H)
        • S(a);::S(C)
      • Refutation
        • S(a);
    • Try
      • P(D);
      • Threat
        • B(B)+S(C),DCHECK
      • Vars
        • Q(b);OGATEB,P_SPINQ(b),XS(C)::R(A)+B(G),XR(c)
        • Q(b);::B(B)+S(C),DCHECK,XQ(b)
        • R(c);::B(B)+S(C),DCHECK,XR(c)
      • Refutation
        • R(c);
  • Actual
    • B(G);P_PINQ(b)
    • Threat
      • R1(I)
    • Vars
      • R(c);N_GUARD,XP(D)::S(C)
      • R(g);N_GUARD,XP(D)::S(C)
      • P(e);OGATE,XP(D)::QAR2(E),XR(g)
      • B(i);N_GUARD::S(H)
      • B(i);N_GUARD::S(H),XB(i)
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