MESON Chess Problem Database

Problem Display
PID: 135955 (1N6/1p6/1r1p1p2/1ppk1p2/3pNP1n/P5Q1/2P1B3/BK2R3 w - - 0 1)

Kirillov, Valery Afanasievich

Maslov, Boris Grigorevich

Mat Plus, 2009

1N6/1p6/1r1p1p2/1ppk1p2/3pNP1n/P5Q1/2P1B3/BK2R3

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Bf3#
      • 2.Bc4#
    • 1...fxe4
      • 2.Qg8#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qg8#
      • 1...Ke6
        • 2.Bc4#
      • 1...Sg6
        • 2.Bf3#
      • 1...c4!
    • 1.Sc3+?
      • 1...Ke6
        • 2.Bc4#
        • 2.Bh5#
      • 1...dxc3!
    • 1.Bf1?
      • threat
        • 2.Sxf6#
        • 2.Qg8#
      • 1...fxe4
        • 2.Qg8#
      • 1...d3
        • 2.Qg8#
      • 1...Sg6
        • 2.Sxf6#
      • 1...c4
        • 2.Qg8#
      • 1...Ke6!
    • 1.Bd3?
      • threat
        • 2.Sxf6#
        • 2.Qg8#
      • 1...fxe4
        • 2.Qg8#
      • 1...Sg6
        • 2.Sxf6#
      • 1...c4
        • 2.Qg8#
      • 1...Ke6!
    • 1.Bc4+?
      • 1...Kxc4
        • 2.Qb3#
      • 1...bxc4+!
    • 1.Bh5?
      • threat
        • 2.Bf7#
        • 2.Qg8#
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke6
        • 2.Sc3#
      • 1...Sg6!
  • Keys
    • 1.Bf3!
      • threat
        • 2.Qg8#
      • 1...Kc4
        • 2.Sd2#
      • 1...Ke6
        • 2.Sg5#
      • 1...Sg6
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(f);SBLOCK,XS(H)::QAB(G)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAB(G)
      • Vars
        • K(e);S_FLIGHT::R(C)+B(E),DCHECK
        • S(b);N_GUARD::B(E)
      • Refutation
        • P(d);
    • Try
      • S(H);CHECK
      • Refutation
        • P(a);XS(H)
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);XS(H)::QAB(G)
        • P(a);::QAB(G)
        • S(b);::S(H),XP(i)
        • P(d);::QAB(G)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);XS(H)::QAB(G)
        • S(b);::S(H),XP(i)
        • P(d);::QAB(G)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • K(e);S_FLIGHT,XB(E)::QAB1(G)
      • Refutation
        • P(c);CHECK,XB(E)
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);S_FLIGHT::QAB1(G)
        • K(e);S_FLIGHT::R(C)+S(H)
      • Refutation
        • S(b);
  • Actual
    • B(E);
    • Threat
      • QAB(G)
    • Vars
      • K(e);S_FLIGHT::S(H)
      • K(e);S_FLIGHT::R(C)+S(H),DCHECK
      • S(b);N_GUARD::B(E)+S(H)
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