MESON Chess Problem Database

Problem Display
PID: 225890 (8/8/3p1K2/1P1R4/pp1N2R1/qBk1P3/rnp5/n1Q1N3 w - - 0 1)

Garaj, Ivan

Sarkits, Anatoly L

Comm., Praca, 2000

8/8/3p1K2/1P1R4/pp1N2R1/qBk1P3/rnp5/n1Q1N3

#2

9 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb3
      • 2.Se2#
    • 1...Sxb3
      • 2.Se2#
      • 2.Qxc2#
    • 1...axb3
      • 2.Se2#
  • Tries
    • 1.Sdxc2?
      • threat
        • 2.Sxa1#
      • 1...Kxb3
        • 2.Sd4#
      • 1...Qxb3
        • 2.Qd2#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sd1
        • 2.Rd3#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sc4
        • 2.Rd3#
      • 1...Sxb3!
    • 1.Sdf3?
      • 1...Qxb3
        • 2.Qd2#
      • 1...Sxb3
        • 2.Qxc2#
      • 1...axb3
        • 2.Qd2#
      • 1...Sd1
        • 2.Rd3#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sc4
        • 2.Rd3#
      • 1...Kxb3!
    • 1.Sf5?
      • 1...Qxb3
        • 2.Qd2#
      • 1...Sxb3
        • 2.Qxc2#
      • 1...axb3
        • 2.Qd2#
      • 1...Sd1
        • 2.Rd3#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sc4
        • 2.Rd3#
      • 1...Kxb3!
    • 1.Sc6?
      • 1...Qxb3
        • 2.Qd2#
      • 1...Sxb3
        • 2.Qxc2#
      • 1...axb3
        • 2.Qd2#
      • 1...Sd1
        • 2.Rd3#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sc4
        • 2.Rd3#
      • 1...Kxb3!
    • 1.Se6?
      • 1...Qxb3
        • 2.Qd2#
      • 1...Sxb3
        • 2.Qxc2#
      • 1...axb3
        • 2.Qd2#
      • 1...Sd1
        • 2.Rd3#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sc4
        • 2.Rd3#
      • 1...Kxb3!
    • 1.Rc5+?
      • 1...Sc4
        • 2.Rxc4#
      • 1...dxc5!
  • Keys
    • 1.Bxc2!
      • threat
        • 2.Se2#
      • 1...Kc4
        • 2.Bb3#
      • 1...Sxc2
        • 2.Qxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(e);SBLOCK,XB(C)::S(E)
    • P(g);SBLOCK,XB(C)::S(E)
  • Tries
    • Try
      • S(E);XP(d)
      • Threat
        • QAR(A)+S(E),XS(a)
      • Vars
        • K(f);P-FLIGHT,XB(C)::S(E)
        • Q(e);SBLOCK,XB(C)::QAB1(A)
        • S(a);OGATE,P_SPINS(a),XS(E)::QAR1(A),XS(a)
        • S(c);N_GUARD::R1(H)
        • S(c);N_GUARD::R1(H),XS(c)
      • Refutation
        • S(a);XB(C)
    • Try
      • S(E);
      • Vars
        • Q(e);SBLOCK,XB(C)::QAB1(A)
        • S(a);N_GUARD,XB(C)::QAR1(A),XP(d)
        • P(g);SBLOCK,XB(C)::QAB1(A)
        • S(c);N_GUARD::R1(H)
        • S(c);N_GUARD::R1(H),XS(c)
      • Refutation
        • K(f);N_SPINP(d),P-FLIGHT,XB(C)
    • Try
      • S(E);
      • Vars
        • Q(e);SBLOCK,XB(C)::QAB1(A)
        • S(a);N_GUARD,XB(C)::QAR1(A),XP(d)
        • P(g);SBLOCK,XB(C)::QAB1(A)
        • S(c);N_GUARD::R1(H)
        • S(c);N_GUARD::R1(H),XS(c)
      • Refutation
        • K(f);N_SPINP(d),P-FLIGHT,XB(C)
    • Try
      • S(E);
      • Vars
        • Q(e);SBLOCK,XB(C)::QAB1(A)
        • S(a);N_GUARD,XB(C)::QAR1(A),XP(d)
        • P(g);SBLOCK,XB(C)::QAB1(A)
        • S(c);N_GUARD::R1(H)
        • S(c);N_GUARD::R1(H),XS(c)
      • Refutation
        • K(f);N_SPINP(d),P-FLIGHT,XB(C)
    • Try
      • S(E);
      • Vars
        • Q(e);SBLOCK,XB(C)::QAB1(A)
        • S(a);N_GUARD,XB(C)::QAR1(A),XP(d)
        • P(g);SBLOCK,XB(C)::QAB1(A)
        • S(c);N_GUARD::R1(H)
        • S(c);N_GUARD::R1(H),XS(c)
      • Refutation
        • K(f);N_SPINP(d),P-FLIGHT,XB(C)
    • Try
      • R(H);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::R1(H),XS(c)
      • Refutation
        • P(i);XR(H)
  • Actual
    • B(C);XP(d)
    • Threat
      • S(E)
    • Vars
      • K(f);P-FLIGHT::QAR(A)+B(C),DCHECK
      • S(a);OGATE,P_SPINS(a),XB(C)::QAR1(A),XS(a)
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