MESON Chess Problem Database

Problem Display
PID: 238816 (2Nk3n/3Pp3/4Ppp1/1N4P1/5Q2/8/3PP1Pq/2K3bR w - - 0 1)

Janevski, Zivko

Rochade Europa, 2012

2Nk3n/3Pp3/4Ppp1/1N4P1/5Q2/8/3PP1Pq/2K3bR

#2

11 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qg3
      • 2.Rxh8#
    • 1...Qxf4
      • 2.Rxh8#
    • 1...Qxh1
      • 2.Qc7#
    • 1...Qxg2
      • 2.Rxh8#
      • 2.Qc7#
    • 1...Qh3
      • 2.Qc7#
    • 1...Qh4
      • 2.Qc7#
    • 1...Qh5
      • 2.Qc7#
    • 1...Qh6
      • 2.Qc7#
    • 1...Qh7
      • 2.Qc7#
    • 1...fxg5
      • 2.Qf8#
  • Tries
    • 1.Sca7?
      • threat
        • 2.Sc6#
      • 1...Qxg2
        • 2.Rxh8#
        • 2.Qc7#
        • 2.Qb8#
      • 1...Bxa7!
    • 1.Sxe7?
      • threat
        • 2.Sc6#
      • 1...Kxe7
        • 2.Qxf6#
      • 1...Qxg2!
    • 1.Rxh2?
      • threat
        • 2.Rxh8#
        • 2.Qc7#
      • 1...Bb6
        • 2.Rxh8#
      • 1...Sf7
        • 2.Qc7#
      • 1...Bxh2!
    • 1.Qxh2?
      • threat
        • 2.Qc7#
        • 2.Qxh8#
      • 1...Bb6
        • 2.Qxh8#
      • 1...Sf7
        • 2.Qc7#
      • 1...Bxh2!
    • 1.Qb8?
      • threat
        • 2.Scd6#
      • 1...Qc7+
        • 2.Qxc7#
      • 1...Qxb8
        • 2.Rxh8#
      • 1...Qd6
        • 2.Scxd6#
        • 2.Rxh8#
      • 1...Ba7!
    • 1.g3?
      • threat
        • 2.Qc7#
      • 1...Qxg3
        • 2.Rxh8#
      • 1...Bb6!
    • 1.gxf6?
      • threat
        • 2.fxe7#
      • 1...exf6
        • 2.Qxf6#
      • 1...Qh4
        • 2.Qc7#
      • 1...Qh7
        • 2.Qc7#
      • 1...Bc5!
  • Keys
    • 1.Scd6!
      • threat
        • 2.Sb7#
      • 1...Qxg2
        • 2.Rxh8#
      • 1...exd6
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • Q(b);OGATE::R(B),XS(g)
    • Q(b);OGATE,P_PINP(C),XQ(F)::R(B),XS(g)
    • Q(b);N_GUARD,XR(B)::QAB1(F)
    • Q(b);N_GUARD::QAB1(F)
    • P(c);OGATE,XP(H)::QAR2(F)
  • Tries
    • Try
      • S(K);
      • Threat
        • S(K)
      • Refutation
        • B(a);XS(K)
    • Try
      • S(K);XP(e)
      • Threat
        • S(K)
      • Vars
        • K(f);OGATEB,S_FLIGHT,XS(K)::QAB1(F),XP(c)
      • Refutation
        • Q(b);XP(E)
    • Try
      • R(B);XQ(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::R(B),XS(g)
        • S(g);::QAB1(F)
      • Refutation
        • B(a);XR(B)
    • Try
      • Q(F);XQ(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAR(F),XS(g)
        • S(g);::QAB1(F)
      • Refutation
        • B(a);XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAR(F)+S(K)
      • Vars
        • Q(b);CHECK,N_GUARD::QAB1(F),XQ(b)
        • Q(b);OGATE,XQ(F)::R(B),XS(g)
      • Refutation
        • B(a);
    • Try
      • P(E);
      • Threat
        • QAB1(F)
      • Vars
        • Q(b);OGATE,XP(E)::R(B),XS(g)
      • Refutation
        • B(a);
    • Try
      • P(H);XP(c)
      • Threat
        • P(H),XP(e)
      • Vars
        • P(e);OGATE,XP(H)::QAB(F),XP(e)
        • Q(b);N_GUARD::QAB1(F)
      • Refutation
        • B(a);
  • Actual
    • S(K);
    • Threat
      • S(K)
    • Vars
      • Q(b);OGATE,XP(E)::R(B),XS(g)
      • P(e);OGATEB,XS(K)::QAB(F),XP(c)
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