MESON Chess Problem Database

Problem Display
PID: 168964 (8/1p6/3PNK1p/1Q1N2p1/3Pk1p1/B3P3/2R3P1/4b3 w - - 0 1)

Basisty, Mark Borisovich

1st Prize, SuperProblem, 2016

8/1p6/3PNK1p/1Q1N2p1/3Pk1p1/B3P3/2R3P1/4b3

#2

10 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...h5
      • 2.Sxg5#
  • Tries
    • 1.Sc3+?
      • 1...Kxe3
        • 2.Re2#
        • 2.Qe2#
      • 1...Bxc3!
    • 1.Sb4?
      • threat
        • 2.Qd3#
        • 2.Qe5#
      • 1...Kxe3
        • 2.Re2#
        • 2.Qe2#
        • 2.Qd3#
        • 2.Qe5#
      • 1...Bg3
        • 2.Qd3#
      • 1...Bxb4!
    • 1.Sdf4?
      • threat
        • 2.Qd3#
        • 2.Qe5#
      • 1...Kxe3
        • 2.Re2#
        • 2.Qe2#
        • 2.Qd3#
        • 2.Qe5#
      • 1...gxf4!
    • 1.Qf1?
      • threat
        • 2.Qf5#
      • 1...Kxd5
        • 2.Qf5#
      • 1...Bf2!
    • 1.Qd3+?
      • 1...Kxd5
        • 2.Sc7#
        • 2.Qf5#
        • 2.e4#
      • 1...Kxd3!
    • 1.Qb1?
      • threat
        • 2.Rc5#
      • 1...Kd3
        • 2.Sc5#
      • 1...Kxd5
        • 2.Qxb7#
      • 1...Bc3!
    • 1.Qxb7?
      • threat
        • 2.Sc5#
      • 1...Kd3
        • 2.Qh7#
      • 1...Bb4!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Sef4#
      • 1...Kd3
        • 2.Qg6#
      • 1...Kxd5
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(e);N_GUARD::S(I),XP(d)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • B(a);P_PINP(E),XS(G)
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAB1(F)
      • Refutation
        • B(a);XS(G)
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Refutation
        • P(d);XS(G)
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Vars
        • K(b);S_FLIGHT,XS(G)::QAR2(F)
      • Refutation
        • B(a);
    • Try
      • Q(F);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAB(F)+R(A)
      • Vars
        • K(b);S_FLIGHT::S(I)
        • K(b);OGATEB,S_FLIGHT,XS(G)::QAB(F),XP(f)
      • Refutation
        • B(a);P_PINP(E)
    • Try
      • Q(F);XP(f)
      • Threat
        • S(I)
      • Vars
        • K(b);S_FLIGHT::QAB(F)
      • Refutation
        • B(a);
  • Actual
    • Q(F);
    • Threat
      • QAR(F)+S(I)
    • Vars
      • K(b);S_FLIGHT::QAB(F)
      • K(b);S_FLIGHT,XS(G)::S(I)
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