MESON Chess Problem Database

Problem Display
PID: 7091 (3R4/b1p5/2pqp3/n1pk4/5Q2/1r1N1RK1/B3P3/B7 w - - 0 1)

Stoyanov, Kiril N

Het Belgisch Schaakbord (L'Echiquier Belge), 1998

3R4/b1p5/2pqp3/n1pk4/5Q2/1r1N1RK1/B3P3/B7

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qd7
      • 2.Rxd7#
    • 1...Sc4
      • 2.e4#
    • 1...c4
      • 2.Qe5#
      • 2.e4#
  • Tries
    • 1.Sc1?
      • threat
        • 2.Rd3#
      • 1...c4
        • 2.Qe5#
      • 1...Sc4
        • 2.e4#
      • 1...e5!
    • 1.Se1?
      • threat
        • 2.Rd3#
      • 1...c4
        • 2.Qe5#
      • 1...Sc4
        • 2.e4#
      • 1...e5!
    • 1.Se5?
      • threat
        • 2.Rd3#
        • 2.e4#
      • 1...Qxd8
        • 2.Rd3#
      • 1...Qd7
        • 2.Rd3#
        • 2.Rxd7#
      • 1...Sc4
        • 2.Qxc4#
        • 2.e4#
      • 1...c4!
    • 1.Bxb3+?
      • 1...Sc4
        • 2.Bxc4#
        • 2.Qe5#
        • 2.e4#
      • 1...c4
        • 2.Qe5#
        • 2.e4#
      • 1...Sxb3!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Rd3#
      • 1...c4
        • 2.Qe5#
      • 1...e5
        • 2.Qf7#
      • 1...Sc4
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(f);N_PINQ(G),OGATEB::R(H),XQ(f)
    • S(b);N_SPINR(a),SBLOCK::P(C)
  • Tries
    • Try
      • S(D);P_SPINR(E)
      • Threat
        • R(E)
      • Vars
        • P(c);N_SPINR(a),SBLOCK::QAR1(G)
        • S(b);N_SPINR(a),SBLOCK::P(C)
      • Refutation
        • P(g);N_PINQ(G)
    • Try
      • S(D);P_SPINR(E)
      • Threat
        • R(E)
      • Vars
        • P(c);N_SPINR(a),SBLOCK::QAR1(G)
        • S(b);N_SPINR(a),SBLOCK::P(C)
      • Refutation
        • P(g);N_PINQ(G)
    • Try
      • S(D);N_SPINQ(G),P_SPINR(E)
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);N_SPINQ(f),XR(H)::R(E)
      • Refutation
        • P(c);N_SPINR(a)
    • Try
      • B(B);CHECK,XR(a)
      • Refutation
        • S(b);XB(B)
  • Actual
    • S(D);P_SPINR(E)
    • Threat
      • R(E)
    • Vars
      • P(c);N_SPINR(a),SBLOCK::QAR1(G)
      • P(g);N_PINQ(G)::QAB(G)
      • S(b);N_SPINR(a),SBLOCK::P(C)
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