MESON Chess Problem Database

Problem Display
PID: 7181 (4RN1K/5Q2/2pp4/3P4/P1nkN3/P1R5/3P4/8 w - - 0 1)

Slesarenko, Anatoly Vasilevich

5th Prize, Spisska Borovicka, 1998

4RN1K/5Q2/2pp4/3P4/P1nkN3/P1R5/3P4/8

#2

10 + 4

136 Problem Observer 2014
136 Problem Observer 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Se3
      • 2.dxe3#
  • Tries
    • 1.Sf6?
      • 1...Kc5
        • 2.Qa7#
      • 1...Sxa3
        • 2.Re4#
      • 1...cxd5
        • 2.Qxd5#
      • 1...Sb2
        • 2.Re4#
      • 1...Se3
        • 2.Re4#
      • 1...Sa5
        • 2.Re4#
      • 1...Se5
        • 2.Se6#
      • 1...Sb6
        • 2.Re4#
      • 1...c5
        • 2.Re4#
      • 1...Sxd2!
    • 1.Rxc4+?
      • 1...Kd3
        • 2.Qf1#
      • 1...Kxc4!
    • 1.Qf2+?
      • 1...Kxd5
        • 2.Sf6#
        • 2.Rd3#
      • 1...Se3!
    • 1.Qf6+?
      • 1...Kxd5
        • 2.Rd3#
      • 1...Se5!
    • 1.Qg7+?
      • 1...Kxd5
        • 2.Rd3#
      • 1...Se5!
  • Keys
    • 1.Qf4!
      • 1...Kxd5
        • 2.Rd3#
      • 1...Sxd2
        • 2.Qxd2#
      • 1...Sxa3
        • 2.Sf6#
      • 1...cxd5
        • 2.Se6#
      • 1...Sb2
        • 2.Sf6#
      • 1...Se3
        • 2.Sf6#
      • 1...Sa5
        • 2.Sf6#
      • 1...Se5
        • 2.Sf6#
      • 1...Sb6
        • 2.Sf6#
      • 1...c5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::P(A),XS(a)
  • Tries
    • Try
      • S(E);
      • Vars
        • K(b);P_SPINS(a),S_FLIGHT::QAB(G)
        • S(a);XP(B)::R1(H)
        • P(c);OGATE,XP(F)::QAR1(G),XP(c)
        • S(a);::R1(H)
        • S(a);SBLOCK::S(I)
        • P(c);SBLOCK::R1(H)
      • Refutation
        • S(a);XP(A)
    • Try
      • R(C);CHECK,XS(a)
      • Vars
        • K(b);P-FLIGHT::QAB(G)
      • Refutation
        • K(b);P-FLIGHT,XR(C)
    • Try
      • Q(G);CHECK
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(F)::R(C)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(F)::R(C)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • Q(G);
    • Vars
      • K(b);P-FLIGHT,XP(F)::R(C)
      • S(a);OGATE,XP(A)::QAR2(G),XS(a)
      • S(a);XP(B)::QAR(G)+S(E)
      • P(c);SBLOCK,XP(F)::S(I)
      • S(a);::QAR(G)+S(E)
      • P(c);SBLOCK::QAR(G)+S(E)
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