MESON Chess Problem Database

Problem Display
PID: 197835 (8/6p1/2pN2Qb/2PpB1pK/3PPp2/p3pk1B/R4p2/5N2 w - - 0 1)

Chobanyan, Shamil

Suomen Shakki, 1986

8/6p1/2pN2Qb/2PpB1pK/3PPp2/p3pk1B/R4p2/5N2

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...e2
      • 2.Rxa3#
    • 1...dxe4
      • 2.Qxe4#
    • 1...g4
      • 2.Qxg4#
  • Tries
    • 1.Bxf4?
      • 1...Kxf4
        • 2.Qf5#
        • 2.Qf7#
      • 1...dxe4
        • 2.Qxe4#
      • 1...gxf4
        • 2.Sh2#
        • 2.Bg2#
        • 2.Qg2#
        • 2.Qg4#
      • 1...g4
        • 2.Qxg4#
      • 1...e2!
    • 1.Bf6?
      • 1...dxe4
        • 2.Qxe4#
      • 1...e2
        • 2.Rxa3#
      • 1...g4
        • 2.Qxg4#
      • 1...gxf6!
    • 1.Bxg7?
      • 1...dxe4
        • 2.Qxe4#
      • 1...e2
        • 2.Rxa3#
      • 1...g4
        • 2.Qxg4#
      • 1...Bxg7!
    • 1.Rc2?
      • 1...dxe4
        • 2.Qxe4#
      • 1...e2
        • 2.Rc3#
      • 1...g4
        • 2.Qxg4#
      • 1...a2!
    • 1.Qf5?
      • threat
        • 2.Qg4#
      • 1...g4
        • 2.Qxg4#
      • 1...g6+!
    • 1.Qe6?
      • threat
        • 2.Qg4#
      • 1...g4
        • 2.Qxg4#
      • 1...g6+!
  • Keys
    • 1.Sf5!
      • 1...Kxe4
        • 2.Sh4#
      • 1...dxe4
        • 2.Sh2#
      • 1...e2
        • 2.Sd2#
      • 1...g4
        • 2.Sh4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB,SBLOCK::R(B),XP(b)
    • P(f);OGATE,XP(E)::QAB1(J),XP(f)
    • P(g);OGATE::QAB1(J),XP(g)
  • Tries
    • Try
      • B(G);XP(e)
      • Vars
        • P(f);OGATE,XP(E)::QAB1(J),XP(f)
        • P(g);OGATE::QAB1(J),XP(g)
      • Refutation
        • P(c);
    • Try
      • B(G);
      • Vars
        • P(f);OGATE,XP(E)::QAB1(J),XP(f)
        • P(c);OGATEB,SBLOCK::R(B),XP(b)
        • P(g);OGATE::QAB1(J),XP(g)
      • Refutation
        • P(j);XB(G)
    • Try
      • B(G);XP(j)
      • Vars
        • P(f);OGATE,XP(E)::QAB1(J),XP(f)
        • P(c);OGATEB,SBLOCK::R(B),XP(b)
        • P(g);OGATE::QAB1(J),XP(g)
      • Refutation
        • B(i);XB(G)
    • Try
      • R(B);
      • Vars
        • P(f);OGATE,XP(E)::QAB1(J),XP(f)
        • P(c);OGATEB,SBLOCK::R(B)
        • P(g);OGATE::QAB1(J),XP(g)
      • Refutation
        • P(b);
    • Try
      • Q(J);P_PINP(e)
      • Threat
        • QAB1(J)
      • Vars
        • P(g);::QAB1(J),XP(g)
      • Refutation
        • P(j);CHECK
    • Try
      • Q(J);
      • Threat
        • QAB1(J)
      • Vars
        • P(g);::QAB1(J),XP(g)
      • Refutation
        • P(j);CHECK
  • Actual
    • S(I);
    • Vars
      • K(d);S_FLIGHT,XP(E)::QAB(J)+S(I)
      • P(f);SBLOCK,XP(E)::S(A)
      • P(c);N_GUARD,SBLOCK::S(A)
      • P(g);N_GUARD::S(I)
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