MESON Chess Problem Database

Problem Display
PID: 243522 (2R1R3/8/1p5P/1N1k2K1/Pp1N2nQ/1p1ppp2/1n6/1q5b w - - 0 1)

Burda, Josef

idee & form, 1989

2R1R3/8/1p5P/1N1k2K1/Pp1N2nQ/1p1ppp2/1n6/1q5b

#2

8 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sh2
      • 2.Qe4#
    • 1...Sxh6
      • 2.Qe4#
  • Tries
    • 1.Kf4?
      • threat
        • 2.Red8#
        • 2.Qd8#
      • 1...Se5
        • 2.Rxe5#
      • 1...Sf6
        • 2.Re5#
        • 2.Qg5#
      • 1...Sc4!
    • 1.Sc6?
      • threat
        • 2.Sxb4#
      • 1...Kc4
        • 2.Se7#
      • 1...Kc5
        • 2.Se7#
      • 1...Qe1!
    • 1.Qg3?
      • threat
        • 2.Qd6#
      • 1...Se5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Sc4!
    • 1.Qxg4?
      • threat
        • 2.Qf5#
        • 2.Qe6#
        • 2.Qd7#
        • 2.Qe4#
      • 1...Sc4
        • 2.Qe6#
        • 2.Qe4#
      • 1...d2
        • 2.Qe6#
        • 2.Qd7#
      • 1...f2
        • 2.Qf5#
        • 2.Qe6#
        • 2.Qd7#
      • 1...Qg1!
    • 1.Qh5?
      • threat
        • 2.Kxg4#
        • 2.Qf7#
      • 1...Sxh6
        • 2.Kxh6#
      • 1...Sc4
        • 2.Qf7#
      • 1...Qg1
        • 2.Qf7#
      • 1...Sf2
        • 2.Kf4#
        • 2.Kh4#
        • 2.Kf6#
        • 2.Kg6#
        • 2.Qf7#
      • 1...Sh2
        • 2.Kf4#
        • 2.Kh4#
        • 2.Kf6#
        • 2.Kg6#
        • 2.Qf7#
      • 1...Sf6
        • 2.Kxf6#
        • 2.Qf7#
      • 1...d2
        • 2.Qf7#
      • 1...Se5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sf4#
      • 1...Ke4
        • 2.Sec7#
      • 1...Ke5
        • 2.Sf4#
        • 2.Sec7#
      • 1...Se5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(i);OGATE::QAB1(C)
    • S(i);OGATE,XP(F)::QAB1(C)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(i);N_GUARD::R1(H),XS(i)
      • Refutation
        • S(c);
    • Try
      • S(B);
      • Threat
        • S(B),XP(h)
      • Vars
        • K(j);P_SPINS(i),S_FLIGHT::R(G)+S(B)
        • K(j);P-FLIGHT::R(G)+S(B)
      • Refutation
        • Q(a);
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Refutation
        • S(c);
    • Try
      • Q(C);XS(i)
      • Threat
        • DUALS(4)
      • Refutation
        • Q(a);P_PINQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(i);XP(F)::QAR(C)+K(E),XS(i)
        • S(c);::QAB(C)
        • Q(a);::QAB(C)
        • P(e);::QAB(C)
      • Refutation
        • S(i);
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(j);P_SPINS(i),S_FLIGHT::R(H)+S(B)
      • S(i);OGATE::QAR1(C)
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