MESON Chess Problem Database

Problem Display
PID: 244877 (8/8/8/4p3/1p4p1/nP4Bp/3R3K/Qb3k2 w - - 0 1)

Borovik, Boris V

Schweizerische Schachzeitung, 1992

8/8/8/4p3/1p4p1/nP4Bp/3R3K/Qb3k2

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qa6#
    • 1...Sc4
      • 2.Qxb1#
    • 1...Sb5
      • 2.Qxb1#
    • 1...e4
      • 2.Qf6#
  • Tries
    • 1.Kh1?
      • 1...Sc2
        • 2.Qa6#
      • 1...Sc4
        • 2.Qxb1#
      • 1...Sb5
        • 2.Qxb1#
      • 1...e4
        • 2.Qf6#
      • 1...h2!
    • 1.Bh4?
      • 1...Sc2
        • 2.Qa6#
      • 1...Sc4
        • 2.Qxb1#
      • 1...Sb5
        • 2.Qxb1#
      • 1...e4
        • 2.Qf6#
      • 1...g3+!
    • 1.Ra2?
      • 1...Sc4
        • 2.Qxb1#
      • 1...Sb5
        • 2.Qxb1#
      • 1...e4
        • 2.Qf6#
      • 1...Sc2!
    • 1.Rb2?
      • 1...Sc2
        • 2.Qa6#
      • 1...Sc4
        • 2.Qxb1#
      • 1...Sb5
        • 2.Qxb1#
      • 1...e4!
    • 1.Rg2?
      • 1...e4
        • 2.Qf6#
      • 1...Sc2
        • 2.Qa6#
      • 1...Sc4
        • 2.Qxb1#
      • 1...Sb5
        • 2.Qxb1#
      • 1...hxg2!
    • 1.Qc3?
      • threat
        • 2.Rf2#
        • 2.Qc1#
      • 1...Bc2
        • 2.Rf2#
      • 1...Sc2
        • 2.Rf2#
        • 2.Qd3#
        • 2.Qc4#
      • 1...bxc3!
    • 1.Qxe5?
      • threat
        • 2.Rd1#
        • 2.Rf2#
        • 2.Qf4#
        • 2.Qe1#
        • 2.Qe2#
      • 1...Bc2
        • 2.Rf2#
        • 2.Qf4#
        • 2.Qe1#
        • 2.Qe2#
      • 1...Bd3
        • 2.Rd1#
        • 2.Rf2#
        • 2.Qf4#
        • 2.Qe1#
      • 1...Sc2
        • 2.Rf2#
        • 2.Qf4#
        • 2.Qf6#
        • 2.Qe2#
        • 2.Qb5#
        • 2.Qf5#
      • 1...Be4!
  • Keys
    • 1.Rc2!
      • 1...Sxc2
        • 2.Qa6#
      • 1...e4
        • 2.Qf6#
      • 1...Sc4
        • 2.Qxb1#
      • 1...Sb5
        • 2.Qxb1#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE::QAB(A)
    • S(c);N_GUARD::QAR(A),XB(a)
    • P(g);OGATE::QAR(A)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • S(c);OGATE::QAB(A)
        • S(c);N_GUARD::QAR(A),XB(a)
        • P(g);OGATE::QAR(A)
      • Refutation
        • P(d);
    • Try
      • B(E);
      • Vars
        • S(c);OGATE::QAB(A)
        • S(c);N_GUARD::QAR(A),XB(a)
        • P(g);OGATE::QAR(A)
      • Refutation
        • P(f);CHECK
    • Try
      • R(B);
      • Vars
        • S(c);N_GUARD::QAR(A),XB(a)
        • P(g);OGATE::QAR(A)
      • Refutation
        • S(c);
    • Try
      • R(B);
      • Vars
        • S(c);OGATE::QAB(A)
        • S(c);N_GUARD::QAR(A),XB(a)
      • Refutation
        • P(g);
    • Try
      • R(B);
      • Vars
        • P(g);OGATE::QAR(A)
        • S(c);OGATE::QAB(A)
        • S(c);N_GUARD::QAR(A),XB(a)
      • Refutation
        • P(d);XR(B)
    • Try
      • Q(A);N_PINB(a)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::R1(B)
      • Refutation
        • P(e);XQ(A)
    • Try
      • Q(A);N_PINB(a),XP(g)
      • Threat
        • DUALS(5)
      • Refutation
        • B(a);
  • Actual
    • R(B);
    • Vars
      • S(c);OGATE,XR(B)::QAB(A)
      • P(g);OGATE::QAR(A)
      • S(c);N_GUARD::QAR(A),XB(a)
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