MESON Chess Problem Database

Problem Display
PID: 268963 (8/1K3B2/ppN3p1/b2P1pP1/3NkP1r/1P1n1pBP/2Q2P2/6Rb w - - 0 1)

Krizhanivsky, Vasil Viktorovich

2nd Place, 09. WCCT, 2012-2013

8/1K3B2/ppN3p1/b2P1pP1/3NkP1r/1P1n1pBP/2Q2P2/6Rb

#2

13 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Rxe1#
  • Tries
    • 1.Se2?
      • threat
        • 2.Qc4#
      • 1...fxe2
        • 2.Qxe2#
      • 1...Bc3
        • 2.Sxc3#
      • 1...b5!
    • 1.Sb5?
      • threat
        • 2.Sd6#
        • 2.Qc4#
      • 1...Bc3
        • 2.Sxc3#
        • 2.Sd6#
      • 1...Bb4
        • 2.Qc4#
      • 1...axb5!
    • 1.Sxf5?
      • threat
        • 2.Sd6#
      • 1...Kxf5
        • 2.Qxd3#
      • 1...gxf5
        • 2.Qc4#
      • 1...Bb4!
    • 1.Se6?
      • threat
        • 2.Qc4#
      • 1...Kxd5
        • 2.Qxd3#
      • 1...b5
        • 2.Sc5#
      • 1...Bc3!
    • 1.Se5?
      • threat
        • 2.Qxd3#
      • 1...Kxd4
        • 2.Qc4#
      • 1...Rxf4!
  • Keys
    • 1.Sxf3!
      • threat
        • 2.Qe2#
      • 1...Kxf3
        • 2.Qxd3#
      • 1...Bxf3
        • 2.Qc4#
      • 1...Bd2
        • 2.Sxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(f);N_GUARD::R(A),XB(f)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR2(B)
      • Vars
        • P(c);OGATE,XS(G)::QAR2(B),XP(c)
        • B(f);N_GUARD::S(G),XB(f)
      • Refutation
        • P(i);
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);::QAR2(B)
      • Refutation
        • P(h);XS(G)
    • Try
      • S(G);XP(g)
      • Threat
        • S(G)
      • Vars
        • K(d);N_GUARD,S_FLIGHT,XS(G)::QAB(B),XS(b)
        • P(j);SBLOCK,XS(G)::QAR2(B)
      • Refutation
        • B(f);
    • Try
      • S(G);
      • Threat
        • QAR2(B)
      • Vars
        • K(d);N_GUARD,N_SPINS(b),S_FLIGHT,XP(I)::QAR2(B),XS(b)
        • P(i);N_GUARD::S(G)
      • Refutation
        • B(f);
    • Try
      • S(K);
      • Threat
        • QAB1(B),XS(b)
      • Vars
        • K(d);N_SPINS(b),OGATEB,P-FLIGHT,XS(G)::QAR1(B)
      • Refutation
        • R(e);XP(H)
  • Actual
    • S(G);XP(c)
    • Threat
      • QAR2(B)
    • Vars
      • K(d);N_GUARD,N_SPINS(b),S_FLIGHT,XS(G)::QAR2(B),XS(b)
      • B(a);SBLOCK,XS(G)::QAR2(B)
      • B(f);N_GUARD::S(G),XB(f)
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