MESON Chess Problem Database

Problem Display
PID: 235345 (3R3n/2p5/1p2p2N/4k1K1/1p6/2pPpb2/3R4/Q7 w - - 0 1)

Paslack, Rainer

Schach-Aktiv, 1992

3R3n/2p5/1p2p2N/4k1K1/1p6/2pPpb2/3R4/Q7

#2

6 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bh1
      • 2.Sg4#
    • 1...Bg2
      • 2.Sg4#
    • 1...Be4
      • 2.Sg4#
      • 2.d4#
    • 1...Bg4
      • 2.Sxg4#
    • 1...Bc6
      • 2.Sg4#
    • 1...Bb7
      • 2.Sg4#
    • 1...Ba8
      • 2.Sg4#
    • 1...Sg6
      • 2.Sf7#
    • 1...Sf7+
      • 2.Sxf7#
    • 1...b3
      • 2.Qxc3#
  • Tries
    • 1.Qb1?
      • threat
        • 2.d4#
      • 1...Sf7+
        • 2.Sxf7#
      • 1...c2
        • 2.Qa1#
        • 2.Qb2#
      • 1...c5!
    • 1.Qe1?
      • threat
        • 2.Qg3#
      • 1...Sf7+
        • 2.Sxf7#
      • 1...Sg6
        • 2.Sf7#
      • 1...Bd5!
    • 1.Qg1?
      • threat
        • 2.Qh2#
        • 2.Qg3#
      • 1...Sf7+
        • 2.Sxf7#
      • 1...Bg2
        • 2.Sg4#
        • 2.Qh2#
      • 1...Sg6
        • 2.Sf7#
      • 1...Bd5!
    • 1.Qa7?
      • threat
        • 2.Qxc7#
      • 1...Sf7+
        • 2.Sxf7#
      • 1...Bb7
        • 2.Sg4#
      • 1...c5
        • 2.Qb8#
        • 2.Qc7#
        • 2.Qg7#
      • 1...c6
        • 2.Qb8#
        • 2.Qc7#
        • 2.Qg7#
      • 1...Bd5!
    • 1.Qa8?
      • threat
        • 2.d4#
      • 1...Sf7+
        • 2.Sxf7#
      • 1...Bxa8
        • 2.Sg4#
      • 1...Bc6
        • 2.Sg4#
      • 1...Bb7
        • 2.Sg4#
      • 1...c5
        • 2.Qb8#
      • 1...c6
        • 2.Qb8#
      • 1...Bd5!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qh2#
      • 1...Sf7+
        • 2.Sxf7#
      • 1...Bxh1
        • 2.Sg4#
      • 1...Bd5
        • 2.d4#
      • 1...Sg6
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • B(c);N_GUARD::S(E)
    • B(c);N_GUARD::S(E),XB(c)
    • S(i);N_GUARD::S(E)
    • S(i);CHECK,N_GUARD::S(E),XS(i)
    • P(d);N_GUARD::QAB(A),XP(a)
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • P(C)
      • Vars
        • S(i);CHECK,N_GUARD::S(E),XS(i)
      • Refutation
        • P(h);
    • Try
      • Q(A);N_PINP(a),P_PINP(b)
      • Threat
        • QAB(A)
      • Vars
        • S(i);CHECK,N_GUARD::S(E),XS(i)
        • S(i);N_GUARD::S(E)
      • Refutation
        • B(c);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(i);CHECK,N_GUARD::S(E),XS(i)
        • S(i);N_GUARD::S(E)
      • Refutation
        • B(c);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAB(A),XP(h)
      • Vars
        • S(i);CHECK,N_GUARD::S(E),XS(i)
        • B(c);N_GUARD::S(E)
      • Refutation
        • B(c);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • P(C)
      • Vars
        • S(i);CHECK,N_GUARD::S(E),XS(i)
        • B(c);N_GUARD,XQ(A)::S(E)
        • B(c);N_GUARD::S(E)
        • P(h);OGATEB::QAB(A)
      • Refutation
        • B(c);
  • Actual
    • Q(A);N_PINP(a)
    • Threat
      • QAB(A)
    • Vars
      • S(i);CHECK,N_GUARD::S(E),XS(i)
      • B(c);N_GUARD,XQ(A)::S(E)
      • B(c);::P(C)
      • S(i);N_GUARD::S(E)
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