MESON Chess Problem Database

Problem Display
PID: 235360 (2Br4/2r5/8/1Q6/p1P1PR2/1p1k2n1/1nN1pP2/b1KbB3 w - - 0 1)

Paslack, Rainer

Die Schwalbe, 1993

2Br4/2r5/8/1Q6/p1P1PR2/1p1k2n1/1nN1pP2/b1KbB3

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sb4#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Rxc8
      • 2.Qd5#
    • 1...Re8
      • 2.Qd5#
    • 1...Rf8
      • 2.Qd5#
    • 1...Rg8
      • 2.Qd5#
    • 1...Rh8
      • 2.Qd5#
    • 1...Sxe4
      • 2.Rf3#
    • 1...a3
      • 2.Qxb3#
  • Tries
    • 1.Qb4?
      • threat
        • 2.Qc3#
      • 1...Rxc4
        • 2.Qd2#
      • 1...Sxe4
        • 2.Rf3#
      • 1...Sxc4!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qc3#
      • 1...Kxc4
        • 2.Ba6#
      • 1...Rxc4
        • 2.Rf3#
      • 1...Sxc4
        • 2.Sb4#
      • 1...Sxe4
        • 2.Qxe4#
      • 1...Rd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(j);SBLOCK::S(C)
    • R(j);N_GUARD::QAR2(H),XR(j)
    • R(j);N_GUARD,XB(I)::QAR2(H)
    • R(j);N_GUARD::QAR2(H)
    • S(g);SBLOCK,XP(F)::R(G)
    • P(h);N_GUARD::QAR2(H),XP(e)
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • R(i);P_PINS(C),SBLOCK,XP(E)::QAR1(H)
        • S(g);SBLOCK,XP(F)::R(G)
      • Refutation
        • S(c);XP(E)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H)
    • Vars
      • K(f);OGATEB,S_FLIGHT,XP(E)::B(I)
      • R(i);P_PINS(C),SBLOCK,XP(E)::R(G)
      • S(c);SBLOCK,XP(E)::S(C)
      • S(g);OGATE,XP(F)::QAB1(H),XS(g)
      • R(j);N_GUARD::QAR1(H),XR(j)
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