MESON Chess Problem Database

Problem Display
PID: 15806 (8/2n3B1/3P2n1/1b1B1p1K/2p1Nk1b/5pNP/2QPR2P/5R1q w - - 0 1)

Pavlov, Mikhail Aleksandrovich

Rychkov, Vladimir Nikolaevich

2nd HM., Bogatur Chess Club, 1988

8/2n3B1/3P2n1/1b1B1p1K/2p1Nk1b/5pNP/2QPR2P/5R1q

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg3
      • 2.hxg3#
    • 1...fxe4
      • 2.Rxe4#
      • 2.Qxe4#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Qxf5#
      • 1...Bxg3
        • 2.Bh6#
      • 1...Bd7
        • 2.Qxc4#
      • 1...Se7
        • 2.Be5#
      • 1...Qxh2!
    • 1.Sc3?
      • threat
        • 2.Qxf5#
      • 1...Qxh2
        • 2.Rxf3#
      • 1...Bxg3
        • 2.Bh6#
      • 1...Se7
        • 2.Be5#
      • 1...Bd7!
    • 1.Sg5?
      • threat
        • 2.Qxf5#
      • 1...Qxh2
        • 2.Rxf3#
      • 1...Bd7
        • 2.Qxc4#
      • 1...Se7
        • 2.Be5#
      • 1...Bxg3!
    • 1.Sf6?
      • threat
        • 2.Qxf5#
      • 1...Qxh2
        • 2.Rxf3#
      • 1...Bxg3
        • 2.Bh6#
      • 1...Bd7
        • 2.Qxc4#
      • 1...Se7!
    • 1.Rxf3+?
      • 1...Kxf3
        • 2.Rf2#
      • 1...Qxf3+!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qxf5#
      • 1...Qxh2
        • 2.Rxf3#
      • 1...Bxg3
        • 2.Bh6#
      • 1...Bd7
        • 2.Qxc4#
      • 1...Se7
        • 2.Be5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(e);OGATE,XS(F)::P(E),XB(e)
  • Tries
    • Try
      • S(H);N_PINP(b)
      • Threat
        • QAR1(B),XP(g)
      • Vars
        • B(e);N_GUARD,XS(F)::B(L)
        • B(f);N_GUARD::QAR(B),XP(c)
        • S(h);N_GUARD::B(L)
      • Refutation
        • Q(a);XP(E)
    • Try
      • S(H);
      • Threat
        • QAR1(B),XP(g)
      • Vars
        • Q(a);N_GUARD,XP(E)::R1(A),XP(b)
        • B(e);N_GUARD,XS(F)::B(L)
        • S(h);N_GUARD::B(L)
      • Refutation
        • B(f);
    • Try
      • S(H);
      • Threat
        • QAR1(B),XP(g)
      • Vars
        • Q(a);N_GUARD,XP(E)::R1(A),XP(b)
        • B(f);N_GUARD::QAR(B),XP(c)
        • S(h);N_GUARD::B(L)
      • Refutation
        • B(e);XS(F)
    • Try
      • S(H);
      • Threat
        • QAR1(B),XP(g)
      • Vars
        • Q(a);N_GUARD,XP(E)::R1(A),XP(b)
        • B(e);N_GUARD,XS(F)::B(L)
        • B(f);N_GUARD::QAR(B),XP(c)
      • Refutation
        • S(h);
    • Try
      • R(A);CHECK,XP(b)
      • Vars
        • K(d);P-FLIGHT,XR(A)::R1(D)
      • Refutation
        • Q(a);CHECK,XR(A)
  • Actual
    • S(H);
    • Threat
      • QAR1(B),XP(g)
    • Vars
      • Q(a);N_GUARD,XP(E)::R1(A),XP(b)
      • B(e);N_GUARD,XS(F)::B(L)
      • B(f);N_GUARD::QAR(B),XP(c)
      • S(h);N_GUARD::B(L)
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