MESON Chess Problem Database

Problem Display
PID: 52677 (5n1B/3p3r/5p1r/p1pR3Q/Pk6/6pR/KN2p2b/1N3bq1 w - - 0 1)

Stojnic, Dragan

Bilten, 2003

5n1B/3p3r/5p1r/p1pR3Q/Pk6/6pR/KN2p2b/1N3bq1

#2

8 + 13

56 The Problemist 2004

SOLUTION

  • SOUND
  • Sets
    • 1...g2
      • 2.Rb3#
    • 1...c4
      • 2.Rb5#
    • 1...f5
      • 2.Bc3#
  • Tries
    • 1.Sd3+?
      • 1...Kxa4
        • 2.Sc3#
      • 1...Kc4!
    • 1.Rh4+?
      • 1...c4
        • 2.Rxc4#
        • 2.Rb5#
      • 1...Qd4!
    • 1.Rd3?
      • threat
        • 2.Rb3#
      • 1...c4
        • 2.Qb5#
      • 1...Qe3!
    • 1.Rd4+?
      • 1...cxd4
        • 2.Qb5#
      • 1...c4
        • 2.Rxc4#
        • 2.Qb5#
      • 1...Qxd4!
    • 1.Qf3?
      • threat
        • 2.Qa3#
        • 2.Qb3#
        • 2.Qc3#
      • 1...e1Q
        • 2.Qa3#
        • 2.Qb3#
      • 1...e1B
        • 2.Qa3#
        • 2.Qb3#
      • 1...Qd4
        • 2.Qa3#
        • 2.Qb3#
      • 1...c4
        • 2.Rb5#
        • 2.Qa3#
        • 2.Qc3#
      • 1...Qe3!
    • 1.Qg4+?
      • 1...c4
        • 2.Rb5#
        • 2.Qxc4#
      • 1...Qd4!
    • 1.Qe5?
      • threat
        • 2.Qc3#
        • 2.Qb8#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qc3#
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qc3#
        • 2.Qxe1#
      • 1...Qe3
        • 2.Qb8#
      • 1...Qd4
        • 2.Qb8#
      • 1...g2
        • 2.Rb3#
        • 2.Qc3#
      • 1...c4
        • 2.Rb5#
        • 2.Qc3#
      • 1...f5
        • 2.Qc3#
      • 1...d6
        • 2.Qc3#
      • 1...fxe5!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qb8#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...g2
        • 2.Rb3#
      • 1...c4
        • 2.Rb5#
      • 1...f5
        • 2.Bc3#
      • 1...d6
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(e);OGATE::R1(D)
    • P(h);OGATE::R1(F)
    • P(i);OGATE::B(H)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(E)::S(A)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • R(D);CHECK
      • Refutation
        • Q(b);P_SPINQ(b)
    • Try
      • R(F);
      • Threat
        • R1(F)
      • Vars
        • P(h);OGATE::QAR1(G)
      • Refutation
        • Q(b);
    • Try
      • R(F);CHECK
      • Vars
        • P(h);OGATE,XR(F)::QAR1(G)
      • Refutation
        • Q(b);XR(F)
    • Try
      • Q(G);
      • Threat
        • DUALS(3)
      • Refutation
        • Q(b);
    • Try
      • Q(G);CHECK
      • Refutation
        • Q(b);P_SPINQ(b)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATE::QAB(G),XQ(c)
        • P(c);OGATE::QAB(G),XB(c)
        • Q(b);::QAR(G)
        • P(i);::QAB1(G)
        • P(k);::QAB1(G)
      • Refutation
        • P(i);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAR(G)
    • Vars
      • P(c);OGATE::QAB(G),XQ(c)
      • P(c);OGATE::QAB(G),XS(c)
      • P(c);OGATE::QAB(G),XB(c)
      • P(c);OGATE::QAB(G),XR(c)
      • P(e);OGATE::R1(D)
      • P(h);OGATE::R1(F)
      • P(i);OGATE::B(H)
      • P(k);OGATE::QAR1(G)
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