MESON Chess Problem Database

Problem Display
PID: 84513 (2R5/8/1p1Pp3/1K1pN1Q1/1p1kP2R/b7/1r6/B7 w - - 0 1)

Szwedowski, Leopold Mieczyslaw

The Problemist, 1991

2R5/8/1p1Pp3/1K1pN1Q1/1p1kP2R/b7/1r6/B7

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rh1?
      • 1...Kxe4
        • 2.Rh4#
      • 1...dxe4
        • 2.Rd1#
      • 1...b3!
    • 1.Rh2?
      • 1...Kxe4
        • 2.Rh4#
      • 1...dxe4
        • 2.Rd2#
      • 1...b3!
    • 1.Rh3?
      • 1...Kxe4
        • 2.Rh4#
      • 1...dxe4
        • 2.Sc6#
      • 1...b3!
    • 1.Rh5?
      • 1...Kxe4
        • 2.Rh4#
      • 1...dxe4
        • 2.Qd2#
      • 1...b3!
    • 1.Rc5?
      • threat
        • 2.exd5#
      • 1...dxe4
        • 2.Qd2#
        • 2.Qg1#
      • 1...bxc5!
    • 1.Qf4?
      • 1...dxe4
        • 2.Qxe4#
      • 1...b3!
    • 1.d7?
      • 1...dxe4
        • 2.d8Q#
        • 2.d8R#
      • 1...b3!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Qe3#
      • 1...Kd3
        • 2.Qe3#
      • 1...Kxe4
        • 2.Se5#
      • 1...dxe4
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Vars
        • K(d);N_SPINR(a),OGATEB,P-FLIGHT,XP(B)::R(C)
        • P(e);SBLOCK,XP(B)::R(C)
      • Refutation
        • P(c);
    • Try
      • R(C);
      • Vars
        • K(d);N_SPINR(a),OGATEB,P-FLIGHT,XP(B)::R(C)
        • P(e);SBLOCK,XP(B)::R(C)
      • Refutation
        • P(c);
    • Try
      • R(C);
      • Vars
        • K(d);N_SPINR(a),OGATEB,P-FLIGHT,XP(B)::R(C)
        • P(e);SBLOCK,XP(B)::S(E)
      • Refutation
        • P(c);
    • Try
      • R(C);
      • Vars
        • K(d);N_SPINR(a),OGATEB,P-FLIGHT,XP(B)::R(C)
        • P(e);SBLOCK,XP(B)::QAR2(F)
      • Refutation
        • P(c);
    • Try
      • R(H);
      • Threat
        • R(C)+P(B),XP(e)
      • Refutation
        • P(f);XR(H)
    • Try
      • Q(F);
      • Vars
        • P(e);OGATE,P_SPINP(e),XP(B)::QAR1(F),XP(e)
      • Refutation
        • P(c);
    • Try
      • P(G);
      • Vars
        • P(e);P_SPINP(e),XP(B)::P=Q
      • Refutation
        • P(c);
  • Actual
    • S(E);
    • Threat
      • QAB1(F)
    • Vars
      • K(d);N_SPINR(a),P-FLIGHT::QAR1(F)
      • K(d);N_SPINR(a),P-FLIGHT,XP(B)::R(C)+S(E)
      • P(e);SBLOCK,XP(B)::QAR2(F)
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