MESON Chess Problem Database

Problem Display
PID: 70044 (4Q3/1p2PB2/1K1p4/p2p4/3kPp2/PR1N1P2/rP1N3p/2BR2n1 w - - 0 1)

Shanshin, Valery Yurevich

1st Prize=, Shakhmatnaya kompozitsiya, 2001

4Q3/1p2PB2/1K1p4/p2p4/3kPp2/PR1N1P2/rP1N3p/2BR2n1

#2

13 + 9

56 The Problemist 2006
56 The Problemist 2009
23 Die Schwalbe 2010
15174 FIDE Album (2001-2003) 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Sb1?
      • threat
        • 2.Qa4#
      • 1...Kc4
        • 2.Qa4#
      • 1...a4
        • 2.Rb4#
        • 2.Qxa4#
      • 1...Rxa3!
    • 1.Sf1?
      • threat
        • 2.Qa4#
      • 1...Kc4
        • 2.Qa4#
      • 1...a4
        • 2.Rb4#
        • 2.Qxa4#
      • 1...Rxa3!
    • 1.Sc4?
      • threat
        • 2.Sde5#
      • 1...Kxc4
        • 2.Qa4#
      • 1...Rxb2
        • 2.Sdxb2#
      • 1...dxc4
        • 2.Qh8#
      • 1...Sxf3!
    • 1.Re1?
      • threat
        • 2.Qa4#
        • 2.Qh8#
      • 1...Rxa3
        • 2.Qh8#
      • 1...Sxf3
        • 2.Qa4#
      • 1...h1Q
        • 2.Qa4#
      • 1...h1R
        • 2.Qa4#
      • 1...a4
        • 2.Qxa4#
        • 2.Qh8#
      • 1...Se2!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sdc4#
      • 1...Kxe5
        • 2.Qh8#
      • 1...Rxb2
        • 2.Bxb2#
      • 1...Sxf3
        • 2.Sexf3#
      • 1...dxe5
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR(M)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(g)::QAR2(M)
      • Refutation
        • R(b);XP(E)
    • Try
      • S(D);
      • Threat
        • QAR(M)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(g)::QAR2(M)
      • Refutation
        • R(b);XP(E)
    • Try
      • S(D);
      • Threat
        • R(B)+S(G)
      • Vars
        • K(d);OGATEB,P-FLIGHT,P_SPINP(g),XS(D)::QAR2(M)
        • R(b);P_PINR(F),XP(C)::R(B)+S(G),XR(b)
        • P(g);XS(D)::QAB(M)
      • Refutation
        • S(a);XP(H)
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XP(E)::QAB(M)
        • S(a);XP(H)::QAR(M)
        • P(c);::QAR(M)
      • Refutation
        • S(a);
  • Actual
    • S(G);
    • Threat
      • R(B)+S(D)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(G)::QAB(M)
      • R(b);OGATE,P_PINR(F),XP(C)::B(A),XR(b)
      • S(a);XP(H)::S(G),XS(a)
      • P(h);SBLOCK,XS(G)::QAR(M)
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