MESON Chess Problem Database

Problem Display
PID: 265100 (2n5/3N1p1r/6p1/K2pRr2/1Bkp3R/3p4/P1p5/5Q1n w - - 0 1)

Basisty, Mark Borisovich

Zamanov, Vidadi

4th HM., Polski Zwiazek Szachowy, 2015

2n5/3N1p1r/6p1/K2pRr2/1Bkp3R/3p4/P1p5/5Q1n

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Sxe5#
    • 1...Sb6
      • 2.Sxb6#
    • 1...Sd6
      • 2.Sb6#
    • 1...Sa7
      • 2.Sb6#
    • 1...Se7
      • 2.Sb6#
    • 1...c1Q
      • 2.Qxc1#
    • 1...c1S
      • 2.Qxc1#
    • 1...c1B
      • 2.Qxc1#
    • 1...c1R
      • 2.Qxc1#
  • Tries
    • 1.Re3?
      • threat
        • 2.Qxd3#
      • 1...Rxf1
        • 2.Se5#
      • 1...c1S
        • 2.Qxc1#
      • 1...Sf2!
    • 1.Re6?
      • threat
        • 2.Rc6#
      • 1...Rf6
        • 2.Se5#
      • 1...Sd6
        • 2.Sb6#
      • 1...Sa7
        • 2.Sb6#
      • 1...Se7
        • 2.Sb6#
      • 1...fxe6!
    • 1.Re8?
      • threat
        • 2.Rxc8#
      • 1...Rf6
        • 2.Se5#
      • 1...Sb6
        • 2.Sxb6#
      • 1...Sd6
        • 2.Sb6#
      • 1...Sa7
        • 2.Sb6#
      • 1...Se7
        • 2.Sb6#
      • 1...Rh8!
    • 1.Qg2?
      • threat
        • 2.Qxd5#
      • 1...Rxe5
        • 2.Sxe5#
      • 1...d2
        • 2.Qe2#
      • 1...Sb6
        • 2.Sxb6#
      • 1...Se7
        • 2.Sb6#
      • 1...Rf3!
    • 1.Qf3?
      • threat
        • 2.Qxd5#
      • 1...Rxe5
        • 2.Sxe5#
      • 1...Sb6
        • 2.Sxb6#
      • 1...Se7
        • 2.Sb6#
      • 1...d2
        • 2.Qe2#
        • 2.Qb3#
        • 2.Qc3#
      • 1...Rxf3!
  • Keys
    • 1.Re2!
      • threat
        • 2.Rxc2#
      • 1...Rxf1
        • 2.Se5#
      • 1...dxe2
        • 2.Qxe2#
      • 1...d2
        • 2.Rf2#
      • 1...c1Q
        • 2.Qxc1#
      • 1...c1S
        • 2.Rc2#
        • 2.Qxc1#
      • 1...c1B
        • 2.Rc2#
        • 2.Qxc1#
      • 1...c1R
        • 2.Qxc1#
      • 1...Rf2
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • R(g);XR(F)::S(G),XR(g)
    • S(k);N_GUARD::S(G),XS(k)
    • S(k);N_GUARD::S(G)
    • P(b);OGATEB::QAR(A),XQ(b)
    • P(b);OGATEB::QAR(A),XS(b)
    • P(b);OGATEB::QAR(A),XB(b)
    • P(b);OGATEB::QAR(A),XR(b)
  • Tries
    • Try
      • R(F);
      • Threat
        • QAB1(A),XP(c)
      • Vars
        • R(g);N_GUARD,N_SPINP(c),P_SPINP(e),XQ(A)::S(G)
        • P(b);OGATEB::QAR(A),XS(b)
      • Refutation
        • S(a);
    • Try
      • R(F);
      • Threat
        • R(F)
      • Vars
        • R(g);N_GUARD::S(G)
        • S(k);N_GUARD::S(G)
      • Refutation
        • P(i);XR(F)
    • Try
      • R(F);
      • Threat
        • R(F),XS(k)
      • Vars
        • R(g);N_GUARD::S(G)
        • S(k);N_GUARD::S(G),XS(k)
        • S(k);N_GUARD::S(G)
      • Refutation
        • R(j);
    • Try
      • Q(A);N_PINP(c),P_PINP(e)
      • Threat
        • QAB1(A),XP(f)
      • Vars
        • R(g);XR(F)::S(G),XR(g)
        • P(c);OGATEB::QAB(A)
        • S(k);N_GUARD::S(G),XS(k)
        • S(k);N_GUARD::S(G)
      • Refutation
        • R(g);
    • Try
      • Q(A);N_PINP(c),P_PINP(e)
      • Threat
        • QAB1(A),XP(f)
      • Vars
        • R(g);XR(F)::S(G),XR(g)
        • S(k);N_GUARD::S(G),XS(k)
        • S(k);N_GUARD::S(G)
      • Refutation
        • R(g);XQ(A)
  • Actual
    • R(F);N_PINP(c),P_PINP(e)
    • Threat
      • R(F),XP(b)
    • Vars
      • R(g);N_GUARD,XQ(A)::S(G)
      • P(c);N_SPINP(e),OGATE,P_SPINP(c),XR(F)::QAB(A),XP(c)
      • P(c);OGATEB::QAB(A)+R(F)
      • P(b);OGATEB::QAR(A),XQ(b)
      • P(b);OGATEB::QAR(A),XR(b)
      • R(g);N_GUARD::S(G)
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