MESON Chess Problem Database

Problem Display
PID: 135547 (3r2n1/B1p4Q/K2pppNp/bPNk1n2/2pP2R1/2p3p1/1Pr1P3/1B6 w - - 0 1)

Paslack, Rainer

1st HM., StrateGems, 2009

3r2n1/B1p4Q/K2pppNp/bPNk1n2/2pP2R1/2p3p1/1Pr1P3/1B6

#2

11 + 14

145 StrateGems 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd4
      • 2.e4#
    • 1...e5
      • 2.Qf7#
  • Tries
    • 1.Sb3?
      • threat
        • 2.e4#
      • 1...Rxe2
        • 2.Sf4#
      • 1...e5
        • 2.Qf7#
      • 1...Se3
        • 2.Sf4#
      • 1...cxb3!
    • 1.Sa4?
      • threat
        • 2.e4#
      • 1...Rxe2
        • 2.Sf4#
      • 1...e5
        • 2.Qf7#
      • 1...Se3
        • 2.Sf4#
      • 1...c5
        • 2.Qb7#
      • 1...Bb6!
    • 1.Se7+?
      • 1...Sfxe7
        • 2.Qe4#
      • 1...Sgxe7!
    • 1.Re4?
      • threat
        • 2.Sf4#
      • 1...e5
        • 2.Qf7#
      • 1...dxc5!
    • 1.Qd7?
      • threat
        • 2.Qc6#
        • 2.Qxe6#
      • 1...Rxe2
        • 2.Qc6#
      • 1...Sxd4
        • 2.e4#
      • 1...Re8
        • 2.Qc6#
      • 1...Sfe7
        • 2.Qxe6#
      • 1...Sg7
        • 2.Qc6#
      • 1...Sge7
        • 2.Qxe6#
      • 1...e5
        • 2.Qc6#
        • 2.Qe6#
        • 2.Qf7#
      • 1...c6
        • 2.Qxc6#
        • 2.Qxe6#
      • 1...Rxd7!
  • Keys
    • 1.Sd3!
      • threat
        • 2.e4#
      • 1...Rxe2
        • 2.Sdf4#
      • 1...cxd3
        • 2.Ba2#
      • 1...e5
        • 2.Qf7#
      • 1...Bb6
        • 2.Sb4#
      • 1...Se3
        • 2.Sgf4#
      • 1...c5
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • S(g);SBLOCK,XP(D)::P(C)
    • P(i);OGATEB::QAB(K)
  • Tries
    • Try
      • S(G);
      • Threat
        • P(C)
      • Vars
        • R(a);XP(C)::S(I)
        • P(i);OGATEB::QAB(K)
        • S(g);::S(I)
      • Refutation
        • P(d);XS(G)
    • Try
      • S(G);
      • Threat
        • P(C)
      • Vars
        • R(a);XP(C)::S(I)
        • P(i);OGATEB::QAB(K)
        • S(g);::S(I)
        • P(l);OGATE::QAB(K)
      • Refutation
        • B(e);
    • Try
      • S(I);CHECK
      • Vars
        • S(g);OGATE,XS(I)::QAB1(K)
      • Refutation
        • S(n);XS(I)
    • Try
      • R(E);
      • Threat
        • S(I)
      • Vars
        • P(i);OGATEB::QAB(K)
      • Refutation
        • P(h);XS(G)
    • Try
      • Q(K);P_PINP(h)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XP(C)::QAB1(K)
        • S(g);SBLOCK,XP(D)::P(C)
        • R(m);::QAB1(K)
        • S(g);::QAB1(K),XP(i)
        • S(g);::QAB1(K)
        • S(n);::QAB1(K),XP(i)
      • Refutation
        • R(m);N_SPINP(h),XQ(K)
  • Actual
    • S(G);
    • Threat
      • P(C)
    • Vars
      • R(a);XP(C)::S(G)
      • P(d);OGATEB,XS(G)::B(A)
      • P(i);OGATEB::QAB(K)
      • B(e);N_GUARD::S(G)
      • S(g);::S(I)
      • P(l);OGATE::QAB(K)
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