MESON Chess Problem Database

Problem Display
PID: 269680 (1n2B3/1n6/2p1kPP1/1N2p3/1P4R1/6P1/b1p3Q1/5R1K w - - 0 1)

Stepochkin, Anatoly Viktorovich

Shakhmatnaya kompozitsiya, 1997

1n2B3/1n6/2p1kPP1/1N2p3/1P4R1/6P1/b1p3Q1/5R1K

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Sc7#
    • 1...Sd7
      • 2.Bf7#
    • 1...c1B
      • 2.Qxa2#
    • 1...e4
      • 2.Qxe4#
  • Tries
    • 1.Rd4?
      • threat
        • 2.Sc7#
        • 2.Bf7#
        • 2.Qh3#
      • 1...exd4
        • 2.Qe4#
      • 1...cxb5
        • 2.Bf7#
        • 2.Qh3#
      • 1...e4
        • 2.Qxe4#
      • 1...Sd6
        • 2.Sc7#
        • 2.Rxd6#
      • 1...Sd8
        • 2.Sc7#
        • 2.Rd6#
        • 2.Qh3#
      • 1...Sa6
        • 2.Bd7#
        • 2.Bf7#
        • 2.Qh3#
      • 1...Bd5!
    • 1.Qxc6+?
      • 1...Sd6
        • 2.Sc7#
        • 2.Bf7#
        • 2.Qxd6#
      • 1...Sxc6!
    • 1.Qd2?
      • threat
        • 2.Sc7#
        • 2.Bf7#
      • 1...cxb5
        • 2.Bf7#
      • 1...e4
        • 2.Rxe4#
      • 1...Sd6
        • 2.Sc7#
        • 2.Qxd6#
      • 1...Sd8
        • 2.Sc7#
        • 2.Qd6#
      • 1...Sa6
        • 2.Bd7#
        • 2.Bf7#
        • 2.Qd7#
      • 1...Bd5+!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Rd4#
      • 1...Bd5+
        • 2.Re4#
      • 1...Kd5
        • 2.Bf7#
      • 1...e4
        • 2.Rg5#
      • 1...Sd6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(f);SBLOCK::S(G)
    • S(g);SBLOCK::B(J)
    • P(b);OGATE::QAB(C),XB(a)
    • P(c);OGATEB::QAR2(C),XP(c)
  • Tries
    • Try
      • R(F);
      • Threat
        • DUALS(3)
      • Vars
        • P(c);OGATEB,XR(F)::QAR2(C)
        • P(c);OGATEB::QAR2(C),XP(c)
      • Refutation
        • B(a);P_PINQ(C)
    • Try
      • Q(C);CHECK,XP(d)
      • Refutation
        • S(g);XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);XS(G)::B(J)
        • P(c);OGATEB::R(F),XP(c)
      • Refutation
        • B(a);CHECK
  • Actual
    • Q(C);
    • Threat
      • QAB(C)+R(F)
    • Vars
      • B(a);CHECK,SBLOCK::QAB(C)+R(F)
      • K(e);N_GUARD,S_FLIGHT::B(J)
      • P(c);::QAB(C)+R(F)
      • S(f);SBLOCK::S(G)
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