MESON Chess Problem Database

Problem Display
PID: 211105 (7r/8/6N1/1Q5p/3RPN1P/3P1k1K/6Rb/n1n3B1 w - - 0 1)

Murashev, Pavel Aleksandrovich

The Problemist, 2019

7r/8/6N1/1Q5p/3RPN1P/3P1k1K/6Rb/n1n3B1

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Qxh5#
    • 1...Rb8
      • 2.Qxh5#
    • 1...Rc8
      • 2.Qxh5#
    • 1...Rd8
      • 2.Qxh5#
    • 1...Re8
      • 2.Qxh5#
    • 1...Rf8
      • 2.Qxh5#
    • 1...Rg8
      • 2.Qxh5#
    • 1...Bg3
      • 2.Rxg3#
    • 1...Sxd3
      • 2.Qxd3#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Rf2#
      • 1...Bxg1
        • 2.Se5#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...Bg3!
    • 1.Qb2?
      • threat
        • 2.Qf2#
      • 1...Bxg1
        • 2.Rg3#
      • 1...Sxd3
        • 2.Qe2#
      • 1...Bg3
        • 2.Rxg3#
      • 1...Se2
        • 2.Qxe2#
      • 1...Sc2!
    • 1.Qd5?
      • threat
        • 2.e5#
      • 1...Rd8
        • 2.Qxh5#
      • 1...Bxg1!
    • 1.Qg5?
      • threat
        • 2.Se5#
      • 1...Bxg1
        • 2.Qg3#
      • 1...Bxf4
        • 2.Qxf4#
      • 1...Re8
        • 2.Qxh5#
      • 1...Sxd3!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Se5#
      • 1...Bxg1
        • 2.Sd5#
      • 1...Sxd3
        • 2.Rxd3#
      • 1...Re8
        • 2.Qxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(f);N_GUARD::QAB(I),XP(e)
    • B(c);N_GUARD::R1(B),XB(c)
    • S(b);OGATE,XP(C)::QAR2(I),XS(b)
  • Tries
    • Try
      • S(G);
      • Threat
        • R1(B)
      • Vars
        • B(c);N_GUARD,XB(A)::S(J)
        • S(b);OGATE,XP(C)::QAR2(I),XS(b)
      • Refutation
        • B(c);
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • B(c);N_GUARD,XB(A)::R1(B)
        • S(b);N_GUARD,XP(C)::QAB1(I)
        • B(c);N_GUARD::R1(B),XB(c)
        • S(b);N_GUARD::QAB1(I),XS(b)
      • Refutation
        • S(a);
    • Try
      • Q(I);
      • Threat
        • QAB(I)+P(F)
      • Vars
        • R(f);N_GUARD::QAB(I),XP(e)
      • Refutation
        • B(c);XB(A)
    • Try
      • Q(I);
      • Threat
        • S(J)
      • Vars
        • B(c);N_GUARD,XB(A)::QAR1(I)
        • B(c);OGATE,XS(G)::QAR1(I),XB(c)
        • R(f);N_GUARD::QAB(I),XP(e)
      • Refutation
        • S(b);XP(C)
  • Actual
    • Q(I);
    • Threat
      • S(J)
    • Vars
      • B(c);N_GUARD,XB(A)::QAR(I)+S(G)
      • S(b);OGATE,XP(C)::R(E),XS(b)
      • R(f);N_GUARD::QAB(I),XP(e)
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