MESON Chess Problem Database

Problem Display
PID: 235346 (1b2K1B1/1p2P1p1/1p1k4/3PN2Q/1P1R1r2/8/8/2R5 w - - 0 1)

Paslack, Rainer

3rd HM., Schach, 1993

1b2K1B1/1p2P1p1/1p1k4/3PN2Q/1P1R1r2/8/8/2R5

#2

9 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Sf7#
    • 1...Re4
      • 2.Sf7#
    • 1...Rg4
      • 2.Sf7#
    • 1...Rh4
      • 2.Sf7#
    • 1...Rf7
      • 2.Sxf7#
    • 1...Rf8+
      • 2.exf8Q#
      • 2.exf8B#
    • 1...Bc7
      • 2.Sc4#
  • Tries
    • 1.Kd8?
      • threat
        • 2.Sc4#
        • 2.e8S#
      • 1...Rf8+
        • 2.exf8Q#
        • 2.exf8B#
      • 1...Rxd4
        • 2.Sf7#
        • 2.e8S#
      • 1...Rf5
        • 2.Sc4#
      • 1...g5
        • 2.Sc4#
      • 1...b5
        • 2.e8S#
      • 1...Bc7+!
    • 1.Rc8?
      • threat
        • 2.Sc4#
      • 1...Rf8+
        • 2.exf8Q#
        • 2.exf8B#
      • 1...Rxd4
        • 2.Sf7#
      • 1...b5!
    • 1.Qg6+?
      • 1...Rf6
        • 2.Sf7#
      • 1...Kxe5!
    • 1.Qf7?
      • threat
        • 2.Qe6#
      • 1...Kxe5
        • 2.Qxf4#
      • 1...Rxf7
        • 2.Sxf7#
      • 1...Rf6!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Sf7#
      • 1...Rf8+
        • 2.exf8Q#
        • 2.exf8B#
      • 1...Kxe5
        • 2.Qxf4#
      • 1...Rxd4
        • 2.Sc4#
      • 1...Rf7
        • 2.Sc4#
        • 2.Sxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD,XR(C)::S(E)
    • R(a);N_GUARD::S(E)
    • R(a);N_GUARD::S(E),XR(a)
    • R(a);CHECK,OGATE::PXR(a)=Q
    • B(f);SBLOCK::S(E)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • R(a);CHECK,OGATE::PXR(a)=Q
        • R(a);::S(E)
        • P(e);::S(E)
        • P(b);::P=S
      • Refutation
        • B(f);CHECK
    • Try
      • R(A);
      • Threat
        • S(E)
      • Vars
        • R(a);CHECK,OGATE::PXR(a)=Q
        • R(a);N_GUARD,XR(C)::S(E)
      • Refutation
        • P(b);
    • Try
      • Q(F);CHECK
      • Vars
        • R(a);P_SPINR(a)::S(E)
      • Refutation
        • K(c);S_FLIGHT,XS(E)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(E)::QAB1(F),XR(a)
        • R(a);XQ(F)::S(E),XR(a)
      • Refutation
        • R(a);
  • Actual
    • Q(F);
    • Threat
      • S(E)
    • Vars
      • R(a);CHECK,OGATE::PXR(a)=Q
      • K(c);OGATEB,P_SPINR(a),S_FLIGHT,XS(E)::QAB1(F),XR(a)
      • R(a);XR(C)::QAB(F)+S(E),DCHECK
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