MESON Chess Problem Database

Problem Display
PID: 235357 (K4N1n/8/p3R3/Q1Pp1kp1/7b/3rPb1P/5R1n/5N2 w - - 0 1)

Paslack, Rainer

Deutsche Schachzeitung, 1982

K4N1n/8/p3R3/Q1Pp1kp1/7b/3rPb1P/5R1n/5N2

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bg3
      • 2.Sxg3#
    • 1...Sxf1
      • 2.Rxf3#
    • 1...Sg4
      • 2.Rxf3#
    • 1...d4+
      • 2.c6#
  • Tries
    • 1.Qd8?
      • threat
        • 2.Qf6#
      • 1...d4+
        • 2.Qd5#
      • 1...Sg4
        • 2.Rxf3#
      • 1...g4!
    • 1.e4+?
      • 1...Kf4
        • 2.Qc7#
      • 1...dxe4!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qe5#
      • 1...d4+
        • 2.e4#
      • 1...Rxe3
        • 2.Sxe3#
      • 1...Bg3
        • 2.Sxg3#
      • 1...Sg4
        • 2.Rxf3#
      • 1...Sg6
        • 2.Qf7#
      • 1...Sf7
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(d);N_GUARD::S(A),XB(d)
    • S(a);N_GUARD,XS(A)::R(B),XB(c)
    • S(a);N_GUARD::R(B),XB(c)
    • P(e);CHECK::QAR(E)+P(F)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • P(e);CHECK,S_CUTR(b)::QAR2(E)
        • S(a);N_GUARD::R(B),XB(c)
      • Refutation
        • P(g);
    • Try
      • P(C);CHECK
      • Vars
        • K(f);P-FLIGHT::QAB(E)
      • Refutation
        • P(e);XP(C)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • P(e);CHECK,N_GUARD::P(C)
      • R(b);XP(C)::S(A),XR(b)
      • B(d);N_GUARD::S(A),XB(d)
      • S(a);N_GUARD::R(B),XB(c)
      • S(i);N_GUARD::QAR2(E)
      • S(i);N_GUARD::QAR2(E),XS(i)
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