MESON Chess Problem Database

Problem Display
PID: 165860 (1N6/3Prp2/1K1pbQ2/3kp3/R1Nnp1p1/p3P1B1/2n5/3R3B w - - 0 1)

Shanshin, Valery Yurevich

Prize, Shakhmatnaya kompozitsiya, 2014

1N6/3Prp2/1K1pbQ2/3kp3/R1Nnp1p1/p3P1B1/2n5/3R3B

#2

10 + 11

145 StrateGems 2016
23 Die Schwalbe 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Qxd6#
    • 1...Bxd7
      • 2.Qxd6#
    • 1...Sxe3
      • 2.Sxe3#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Bxe4#
      • 1...Sf3
        • 2.Ra5#
      • 1...Bf5!
    • 1.Sxe5?
      • threat
        • 2.Ra5#
      • 1...dxe5
        • 2.Qxe5#
      • 1...Bxd7!
    • 1.Qf5?
      • threat
        • 2.Bxe4#
        • 2.Qxe4#
      • 1...Bxd7
        • 2.Bxe4#
      • 1...Sb4
        • 2.Rxd4#
      • 1...Bxf5!
  • Keys
    • 1.Sxd6!
      • threat
        • 2.Qxe5#
      • 1...Kxd6
        • 2.Qxe5#
      • 1...Bxd7
        • 2.Bxe4#
      • 1...Bf5
        • 2.Ra5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(i);OGATE::QAR1(H),XP(h)
    • B(i);OGATE,XP(I)::QAR1(H),XP(h)
    • S(a);XP(C)::S(F),XS(a)
  • Tries
    • Try
      • S(F);N_PINS(c)
      • Threat
        • B(B),XP(d)
      • Vars
        • S(c);N_GUARD,N_SPINP(d)::R(E)
      • Refutation
        • B(i);
    • Try
      • S(F);XP(g)
      • Threat
        • R(E)
      • Vars
        • P(h);OGATE,XS(F)::QAR1(H),XP(h)
      • Refutation
        • B(i);XP(I)
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • B(i);XP(I)::B(B),XP(d)
        • S(a);N_GUARD::R1(A),XS(c)
      • Refutation
        • B(i);XQ(H)
  • Actual
    • S(F);XP(h)
    • Threat
      • QAR1(H),XP(g)
    • Vars
      • K(f);N_SPINP(d),P-FLIGHT,P_SPINB(i),P_SPINP(g),XS(F)::QAB1(H),XP(g)
      • B(i);XP(I)::B(B),XP(d)
      • B(i);::R(E)
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