MESON Chess Problem Database

Problem Display
PID: 86165 (8/4KB2/1p6/pPpp4/Pk2p3/1Np1N3/R7/Q7 w - - 0 1)

Marandiuk, Mikhail Nazarovich

Vladimirov, V?

Probleemblad, 1977

8/4KB2/1p6/pPpp4/Pk2p3/1Np1N3/R7/Q7

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb3
      • 2.Qb1#
    • 1...d4
      • 2.Sc2#
  • Tries
    • 1.Sc1?
      • threat
        • 2.Qb1#
      • 1...c2
        • 2.Qb2#
      • 1...c4!
    • 1.Sd2?
      • threat
        • 2.Sc2#
        • 2.Sxd5#
        • 2.Qb1#
      • 1...cxd2
        • 2.Qb2#
      • 1...c2
        • 2.Sxc2#
        • 2.Sxd5#
        • 2.Qb2#
      • 1...d4
        • 2.Sc2#
        • 2.Sd5#
        • 2.Qb1#
      • 1...c4!
    • 1.Sxa5?
      • 1...Kxa5
        • 2.Qxc3#
      • 1...bxa5
        • 2.Qb1#
      • 1...c2
        • 2.Qe1#
      • 1...d4
        • 2.Sc6#
      • 1...c4!
    • 1.Sxd5+?
      • 1...Kc4
        • 2.Qxc3#
      • 1...Kxb3!
    • 1.Bxd5?
      • threat
        • 2.Sc2#
      • 1...c2
        • 2.Sxc2#
        • 2.Qe1#
      • 1...c4!
    • 1.Ra3?
      • 1...c4
        • 2.Sc2#
        • 2.Sxd5#
      • 1...d4
        • 2.Sc2#
      • 1...c2!
    • 1.Qb2?
      • threat
        • 2.Qa3#
      • 1...c2
        • 2.Sa1#
        • 2.Sc1#
        • 2.Sd2#
        • 2.Sd4#
      • 1...cxb2!
    • 1.Qb1?
      • threat
        • 2.Sa1#
        • 2.Sc1#
        • 2.Sd2#
        • 2.Sd4#
      • 1...c4
        • 2.Sc2#
        • 2.Sxd5#
      • 1...d4
        • 2.Sa1#
        • 2.Sc1#
        • 2.Sd2#
        • 2.Sxd4#
        • 2.Sc2#
      • 1...c2!
    • 1.Qc1?
      • threat
        • 2.Qa3#
      • 1...Kxb3
        • 2.Qa3#
        • 2.Qb1#
      • 1...c2!
    • 1.Qd1?
      • 1...c4
        • 2.Sxd5#
      • 1...d4
        • 2.Sc2#
      • 1...c2!
    • 1.Qe1?
      • 1...Kxb3
        • 2.Qb1#
      • 1...d4
        • 2.Sc2#
      • 1...c4!
  • Keys
    • 1.Sxc5!
      • 1...Kxc5
        • 2.Qxc3#
      • 1...bxc5
        • 2.Qb1#
      • 1...c2
        • 2.Qd4#
      • 1...d4
        • 2.Sa6#

This is a version of 141748

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(b);OGATEB,P-FLIGHT,P_SPINP(f),XS(C)::QAR2(A)
    • P(f);::S(D)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR(A)
      • Vars
        • P(a);N_GUARD::QAR2(A)
      • Refutation
        • P(e);
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • P(a);N_GUARD,XS(C)::QAR2(A)
      • Refutation
        • P(e);
    • Try
      • S(C);XP(d)
      • Vars
        • K(b);S_FLIGHT,XS(C)::QAB(A),XP(a)
        • P(g);SBLOCK,XS(C)::QAR(A)
        • P(a);OGATEB::QAB(A)
        • P(f);::S(C)
      • Refutation
        • P(e);
    • Try
      • S(D);CHECK,XP(f)
      • Vars
        • K(b);P-FLIGHT::QAR1(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT,XS(C)
    • Try
      • B(H);XP(f)
      • Threat
        • S(D)
      • Refutation
        • P(e);
    • Try
      • R(B);
      • Vars
        • P(f);::S(D)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(4)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • P(e);SBLOCK::S(D),XP(f)
        • P(f);::S(D)
      • Refutation
        • P(a);
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • K(b);N_SPINP(a),OGATEB,P-FLIGHT,P_SPINP(f),XS(C)::QAR2(A)
        • P(f);::S(D)
      • Refutation
        • P(e);
  • Actual
    • S(C);XP(e)
    • Vars
      • K(b);S_FLIGHT,XS(C)::QAR2(A),XP(a)
      • P(g);SBLOCK,XS(C)::QAR(A)
      • P(a);OGATE::QAR2(A)
      • P(f);::S(C)
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