MESON Chess Problem Database

Problem Display
PID: 261612 (2bBQ3/1pp2P1B/6N1/5R1p/2N2nPP/3p1k1p/5P2/2b2K2 w - - 0 1)

Wielgos, Oskar

Schweizerische Schachzeitung, 1980

2bBQ3/1pp2P1B/6N1/5R1p/2N2nPP/3p1k1p/5P2/2b2K2

#2

11 + 9

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg4
      • 2.Sge5#
    • 1...Bb2
      • 2.Rxf4#
    • 1...Ba3
      • 2.Rxf4#
    • 1...d2
      • 2.Rxf4#
      • 2.Qe2#
  • Tries
    • 1.Sd2+?
      • 1...Kxg4
        • 2.Se5#
        • 2.Rxf4#
        • 2.Rg5#
      • 1...Bxd2!
    • 1.Sd6?
      • threat
        • 2.Se5#
      • 1...Kxg4
        • 2.Se5#
      • 1...Bb2
        • 2.Rxf4#
      • 1...cxd6!
    • 1.Rf6?
      • threat
        • 2.Sge5#
      • 1...Kxg4
        • 2.Sce5#
      • 1...Bb2
        • 2.Rxf4#
      • 1...Bf5!
    • 1.Qc6+?
      • 1...Kxg4
        • 2.Sge5#
        • 2.Rg5#
      • 1...bxc6!
    • 1.Qe1?
      • threat
        • 2.Sce5#
        • 2.Sge5#
      • 1...Kxg4
        • 2.Sge5#
      • 1...Bb2
        • 2.Rxf4#
      • 1...Be3!
    • 1.Qe3+?
      • 1...Kxg4
        • 2.Sge5#
        • 2.Rxf4#
        • 2.Rg5#
      • 1...Bxe3!
    • 1.Qe4+?
      • 1...Kxg4
        • 2.Sce5#
        • 2.Sge5#
        • 2.Rg5#
      • 1...Kxe4!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Sce5#
      • 1...Ke4
        • 2.Sd2#
      • 1...Kxg4
        • 2.Sge5#
      • 1...Bb2
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(c);N_GUARD,N_SPINS(e),S_FLIGHT,XP(D)::S(G)
    • B(a);N_GUARD::R1(F),XS(e)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • B(a);XS(C)
    • Try
      • S(C);
      • Threat
        • S(G)
      • Vars
        • K(c);N_SPINS(e),S_FLIGHT,XP(D)::S(G)
        • B(a);N_GUARD::R1(F),XS(e)
      • Refutation
        • P(h);XS(C)
    • Try
      • R(F);
      • Threat
        • S(G)
      • Vars
        • K(c);N_GUARD,N_SPINS(e),S_FLIGHT,XP(D)::S(C)
        • B(a);N_GUARD::R1(F),XS(e)
      • Refutation
        • B(i);N_SPINS(e)
    • Try
      • Q(K);CHECK
      • Refutation
        • P(g);XQ(K)
    • Try
      • Q(K);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);N_SPINS(e),S_FLIGHT,XP(D)::S(G)
        • B(a);N_GUARD::R1(F),XS(e)
      • Refutation
        • B(a);
    • Try
      • Q(K);CHECK
      • Refutation
        • B(a);XQ(K)
    • Try
      • Q(K);CHECK
      • Refutation
        • K(c);N_SPINS(e),S_FLIGHT,XQ(K)
  • Actual
    • Q(K);
    • Threat
      • S(C)
    • Vars
      • K(c);N_GUARD,N_SPINS(e),S_FLIGHT::QAR(K)+S(C),DCHECK
      • K(c);N_GUARD,N_SPINS(e),S_FLIGHT,XP(D)::S(G)
      • B(a);N_GUARD::R1(F),XS(e)
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