MESON Chess Problem Database

Problem Display
PID: 162748 (n3QK2/2b2B2/pp1ppp2/4k3/1p5p/1bPR1RPq/r2N1N2/2B5 w - - 0 1)

Basisty, Mark Borisovich

Die Schwalbe, 2015

n3QK2/2b2B2/pp1ppp2/4k3/1p5p/1bPR1RPq/r2N1N2/2B5

#2

10 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Sg4#
    • 1...Qg2
      • 2.Sg4#
    • 1...Qg4
      • 2.Sxg4#
    • 1...Qh1
      • 2.Sg4#
    • 1...Qh2
      • 2.Sg4#
    • 1...Bd1
      • 2.Sc4#
    • 1...Bc2
      • 2.Sc4#
    • 1...Ba4
      • 2.Sc4#
    • 1...Bc4
      • 2.Sxc4#
  • Tries
    • 1.Rd5+?
      • 1...Bxd5
        • 2.Sd3#
      • 1...Kxd5!
    • 1.Qe7?
      • threat
        • 2.Qxf6#
      • 1...Bd8
        • 2.Qxd6#
      • 1...d5
        • 2.Rde3#
      • 1...f5
        • 2.Rfe3#
      • 1...Qf5!
    • 1.c4?
      • threat
        • 2.Rd5#
      • 1...Bxc4
        • 2.Sxc4#
      • 1...d5
        • 2.Rxd5#
      • 1...f5
        • 2.Qxe6#
      • 1...Ra5
        • 2.Bb2#
      • 1...Rxd2!
  • Keys
    • 1.g4!
      • threat
        • 2.Rf5#
      • 1...Qxg4
        • 2.Sxg4#
      • 1...Qxf3
        • 2.Sxf3#
      • 1...d5
        • 2.Qxe6#
      • 1...f5
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • Q(c);N_GUARD::S(C)
    • Q(c);N_GUARD::S(C),XQ(c)
    • B(b);N_GUARD::S(B)
    • B(b);N_GUARD::S(B),XB(b)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • B(b);SBLOCK,XR(E)::S(C)
      • Refutation
        • K(f);P-FLIGHT,XR(E)
    • Try
      • Q(I);
      • Threat
        • QAB1(I),XP(k)
      • Vars
        • B(l);N_GUARD::QAB1(I),XP(i)
        • P(i);SBLOCK::R(E)
        • P(k);SBLOCK::R(F)
      • Refutation
        • Q(c);
    • Try
      • P(D);
      • Threat
        • R1(E)
      • Vars
        • B(b);XP(D)::S(B),XB(b)
        • P(i);::R1(E),XP(i)
        • P(k);S_CUTQ(c)::QAR1(I),XP(j)
        • R(a);N_GUARD::B(A)
      • Refutation
        • R(a);XS(B)
  • Actual
    • P(G);
    • Threat
      • R1(F)
    • Vars
      • Q(c);XP(G)::S(C),XQ(c)
      • Q(c);XR(F)::S(B),XQ(c)
      • P(i);S_CUTB(b)::QAR1(I),XP(j)
      • P(k);::R1(F),XP(k)
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