MESON Chess Problem Database

Problem Display
PID: 103194 (1BR5/4Kbp1/pQ6/p1np4/r2k1N2/qpN5/5P2/n1R2B2 w - - 0 1)

Maslov, Boris Grigorevich

Original, 1975

1BR5/4Kbp1/pQ6/p1np4/r2k1N2/qpN5/5P2/n1R2B2

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc1
      • 2.Qxc5#
    • 1...Qb2
      • 2.Qxc5#
    • 1...Qa2
      • 2.Qxc5#
    • 1...Rb4
      • 2.Qxc5#
    • 1...Bh5
      • 2.Se6#
    • 1...Be6
      • 2.Sxe6#
    • 1...Bg6
      • 2.Se6#
    • 1...Be8
      • 2.Se6#
    • 1...g5
      • 2.Qf6#
    • 1...g6
      • 2.Qf6#
  • Tries
    • 1.Kxf7?
      • threat
        • 2.Se6#
      • 1...Qxc1
        • 2.Qxc5#
      • 1...Sc2!
    • 1.Bd3?
      • threat
        • 2.Sce2#
      • 1...Qb2
        • 2.Qxc5#
      • 1...Qa2
        • 2.Qxc5#
      • 1...Bh5!
    • 1.Bxa6?
      • threat
        • 2.Sfe2#
      • 1...Qb2
        • 2.Qxc5#
      • 1...Qa2
        • 2.Qxc5#
      • 1...Bh5
        • 2.Se6#
      • 1...Rc4!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qe5#
      • 1...Sd3
        • 2.Sfe2#
      • 1...Se4
        • 2.Sce2#
      • 1...Se6
        • 2.Rd1#
      • 1...Sb7
        • 2.Rd1#
      • 1...Sd7
        • 2.Rd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 10
  • Sets
    • Q(b);N_GUARD,XR(A)::QAB1(F),XS(g)
    • Q(b);N_GUARD::QAB1(F),XS(g)
    • R(d);S_CUTQ(b)::QAB1(F),XS(g)
    • B(j);N_GUARD::S(E)
    • B(j);N_GUARD::S(E),XB(j)
    • P(k);N_GUARD::QAB(F)
  • Tries
    • Try
      • K(G);P-FLIGHT,XB(j)
      • Threat
        • S(E)
      • Vars
        • Q(b);N_GUARD,XR(A)::QAB1(F),XS(g)
      • Refutation
        • S(a);
    • Try
      • B(B);
      • Threat
        • S(D)
      • Vars
        • Q(b);N_GUARD::QAB1(F),XS(g)
      • Refutation
        • B(j);
    • Try
      • B(B);XP(i)
      • Threat
        • S(E)
      • Vars
        • Q(b);N_GUARD::QAB1(F),XS(g)
        • B(j);N_GUARD::S(E)
      • Refutation
        • R(d);
  • Actual
    • Q(F);N_PINS(g),P_PINP(h)
    • Threat
      • QAB1(F)
    • Vars
      • S(g);P_PINQ(F),SBLOCK::S(E)
      • S(g);P_PINQ(F),SBLOCK::S(D)
      • S(g);N_GUARD,P_PINQ(F)::R(A)
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