MESON Chess Problem Database

Problem Display
PID: 276150 (2rq2b1/n3P3/Bb1R2N1/1P3Q1K/1rk1P2R/B7/2P5/3N4 w - - 0 1)

Kovacevic, Marjan

Springaren, 1993

2rq2b1/n3P3/Bb1R2N1/1P3Q1K/1rk1P2R/B7/2P5/3N4

#2

12 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Se5#
      • 2.Qf1#
    • 1...Rb2
      • 2.Se5#
      • 2.Qf1#
    • 1...Rb3
      • 2.Se5#
    • 1...Ra4
      • 2.Se5#
      • 2.Qf1#
    • 1...Rxb5
      • 2.Se5#
    • 1...Rc5
      • 2.e5#
    • 1...Bc5
      • 2.Se5#
      • 2.Qf1#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Bh7
      • 2.Qd5#
  • Tries
    • 1.Qc5+?
      • 1...Rxc5+
        • 2.e5#
      • 1...Bxc5
        • 2.Se5#
      • 1...Kxc5!
    • 1.Qe5?
      • threat
        • 2.Qc3#
      • 1...Rxb5
        • 2.Sb2#
      • 1...Rc5
        • 2.Se3#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Rb3!
    • 1.e5+?
      • 1...Kc5
        • 2.Bxb4#
        • 2.Qf2#
      • 1...Bd4!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qc3#
      • 1...Rxb5+
        • 2.Se5#
      • 1...Rc5+
        • 2.e5#
      • 1...Kc5
        • 2.Qd4#
      • 1...Rb3
        • 2.Se5#
      • 1...Bd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(a);::S(K)
    • R(a);P_PINQ(G),P_SPINR(a),XP(F)::S(K)
    • R(e);P_PINQ(G),SBLOCK,S_CUTB(c)::R(E)+P(D)
    • B(g);N_GUARD::QAB1(G),XB(g)
    • B(g);N_GUARD::QAB1(G)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • R(e);CHECK,SBLOCK,XQ(G)::R(E)+P(D)
        • B(c);SBLOCK,XQ(G)::S(K)
      • Refutation
        • K(b);P-FLIGHT,P_SPINR(a),XQ(G)
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • R(a);N_GUARD,P_PINQ(G),P_SPINR(a),XP(F)::S(A)
        • R(e);P_PINQ(G),S_CUTB(c)::S(A)
        • B(c);N_GUARD::QAR1(G),XB(c)
      • Refutation
        • R(a);
    • Try
      • P(D);CHECK
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • Q(G);
    • Threat
      • QAR1(G)
    • Vars
      • R(a);CHECK,P_SPINR(a),XP(F)::S(K)
      • R(e);CHECK,SBLOCK,S_CUTB(c)::R(E)+P(D)
      • K(b);P-FLIGHT,P_SPINR(a),S_CUTB(c)::QAB1(G)
      • R(a);::S(K)
      • B(c);N_GUARD::QAR1(G),XB(c)
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