MESON Chess Problem Database

Problem Display
PID: 169220 (n5Rq/5NpP/6Q1/n2kp3/1P6/1PP5/2K5/8 w - - 0 1)

Basisty, Mark Borisovich

Vasilenko, Anatoly Grigorovich

1/2 Comm., SuperProblem-10 JT, 2016

n5Rq/5NpP/6Q1/n2kp3/1P6/1PP5/2K5/8

#2

8 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh7
      • 2.Rd8#
    • 1...e4
      • 2.Qd6#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Qe6#
      • 1...Qxh7
        • 2.Rd8#
      • 1...Qxg8
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Sc7!
    • 1.Sd8?
      • threat
        • 2.Qd3#
      • 1...Sxb3
        • 2.Qc6#
      • 1...e4
        • 2.Qe6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Qxh7!
    • 1.c4+?
      • 1...Kd4
        • 2.Qd3#
      • 1...Sxc4!
  • Keys
    • 1.Kd3!
      • threat
        • 2.Qd6#
      • 1...e4+
        • 2.Qxe4#
      • 1...Qxh7
        • 2.Rd8#
      • 1...Sc4
        • 2.bxc4#
      • 1...Sb7
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(f);N_GUARD,P_PINQ(E),XP(G)::R(H)
    • P(c);SBLOCK::QAR1(E)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAB1(E)
      • Vars
        • Q(f);N_GUARD,P_PINQ(E),XP(G)::R(H)
        • Q(f);OGATE,XR(H)::PXQ(f)=Q
      • Refutation
        • S(e);
    • Try
      • S(F);
      • Threat
        • QAR2(E)
      • Vars
        • S(a);N_GUARD,XP(B)::QAB1(E)
        • P(c);::QAB1(E)
        • S(a);N_GUARD::QAB1(E),XS(a)
      • Refutation
        • Q(f);P_PINQ(E),XP(G)
    • Try
      • P(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • S(a);XP(C)
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAR1(E)
    • Vars
      • P(c);CHECK::QAB1(E),XP(c)
      • Q(f);N_GUARD,P_PINQ(E),XP(G)::R(H)
      • S(a);OGATE::P(B),XS(a)
      • S(a);N_GUARD::P(C)
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