MESON Chess Problem Database

Problem Display
PID: 104654 (4BR2/3Qp2p/4P2p/6Pp/R1p2N1k/8/4P1PN/7K w - - 0 1)

Velimirovic, Milan

Mat, 1982

4BR2/3Qp2p/4P2p/6Pp/R1p2N1k/8/4P1PN/7K

#2

11 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg5
      • 2.Qxe7#
  • Tries
    • 1.Sxh5?
      • 1...Kxg5
        • 2.Qxe7#
      • 1...hxg5!
    • 1.Sg6+?
      • 1...Kg3
        • 2.Rf3#
        • 2.Qc7#
      • 1...Kxg5
        • 2.Ra5#
        • 2.Qb5#
        • 2.Qd2#
        • 2.Qd5#
        • 2.Qxe7#
      • 1...hxg6!
    • 1.Ra3?
      • 1...Kxg5
        • 2.Qxe7#
      • 1...hxg5
        • 2.Rh3#
        • 2.g3#
      • 1...c3!
    • 1.Rxc4?
      • 1...Kg3
        • 2.Sxh5#
      • 1...Kxg5
        • 2.Sh3#
        • 2.Qxe7#
      • 1...hxg5!
    • 1.Qd3?
      • 1...Kxg5
        • 2.Qg3#
      • 1...hxg5
        • 2.Qh3#
        • 2.g3#
      • 1...c3
        • 2.Sh3#
      • 1...cxd3!
    • 1.Qd4?
      • 1...Kg3
        • 2.Sxh5#
      • 1...Kxg5
        • 2.Sh3#
      • 1...hxg5
        • 2.Qf2#
      • 1...c3!
    • 1.Qc7?
      • 1...Kg3
        • 2.Sg6#
      • 1...Kxg5
        • 2.Qxe7#
      • 1...c3
        • 2.Sh3#
      • 1...hxg5!
    • 1.g3+?
      • 1...Kxg5
        • 2.Sh3#
        • 2.Ra5#
        • 2.Qb5#
        • 2.Qd5#
        • 2.Qxe7#
      • 1...Kxg3!
  • Keys
    • 1.Qd2!
      • 1...Kg3
        • 2.Qe1#
      • 1...Kxg5
        • 2.Sg6#
      • 1...hxg5
        • 2.Qe1#
      • 1...c3
        • 2.Sxh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,S_FLIGHT,XP(G)::QAB(I),XP(e)
  • Tries
    • Try
      • S(F);P_PINP(a),XP(c)
      • Vars
        • K(b);N_SPINP(a),OGATEB,S_FLIGHT,XP(G)::QAB(I),XP(e)
      • Refutation
        • P(d);XP(G)
    • Try
      • S(F);CHECK,P_PINP(a)
      • Refutation
        • P(f);XS(F)
    • Try
      • R(E);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XP(G)::QAB(I),XP(e)
      • Refutation
        • P(a);
    • Try
      • R(E);XP(a)
      • Vars
        • K(b);S_FLIGHT::S(F),XP(c)
      • Refutation
        • P(d);XP(G)
    • Try
      • Q(I);
      • Vars
        • K(b);S_FLIGHT,XP(G)::QAR2(I)
        • P(a);::R(E)+S(F)
      • Refutation
        • P(a);XQ(I)
    • Try
      • Q(I);
      • Vars
        • K(b);S_FLIGHT::S(F),XP(c)
        • K(b);S_FLIGHT,XP(G)::S(F)
        • P(d);SBLOCK,XP(G)::QAB(I)
      • Refutation
        • P(a);
    • Try
      • Q(I);
      • Vars
        • K(b);S_FLIGHT::QAB(I)+S(F)
        • K(b);OGATEB,S_FLIGHT,XP(G)::QAB(I),XP(e)
        • P(a);::R(E)+S(F)
      • Refutation
        • P(d);XP(G)
    • Try
      • P(C);CHECK
      • Refutation
        • K(b);S_FLIGHT,XP(C)
  • Actual
    • Q(I);
    • Vars
      • K(b);S_FLIGHT::QAB(I)
      • K(b);S_FLIGHT,XP(G)::QAB(I)+S(F)
      • P(d);SBLOCK,XP(G)::QAB(I)
      • P(a);::R(E)+S(F),XP(c)
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