MESON Chess Problem Database

Problem Display
PID: 54339 (7Q/5K2/1B1pPP2/b1pk4/pRpNrp2/3N1B2/8/3R4 w - - 0 1)

Shanshin, Valery Yurevich

2nd Prize, Shakhmatnaya Poeziya, 2002

7Q/5K2/1B1pPP2/b1pk4/pRpNrp2/3N1B2/8/3R4

#2

10 + 8

56 The Problemist 2004
15174 FIDE Album (2001-2003) 2011

SOLUTION

  • SOUND
  • Sets
    • 1...cxd3
      • 2.Qh5#
    • 1...c3
      • 2.Qh5#
      • 2.Qa8#
    • 1...cxb4
      • 2.Qh5#
      • 2.Qa8#
    • 1...cxd4
      • 2.Qa8#
  • Tries
    • 1.Sc1?
      • threat
        • 2.Qh5#
      • 1...Ke5
        • 2.Qh5#
      • 1...cxd4!
    • 1.Se1?
      • threat
        • 2.Qh5#
      • 1...Ke5
        • 2.Qh5#
      • 1...cxd4!
    • 1.Sb2?
      • threat
        • 2.Qh5#
      • 1...Ke5
        • 2.Qh5#
      • 1...cxd4!
    • 1.Sf2?
      • threat
        • 2.Qh5#
      • 1...Ke5
        • 2.Qh5#
      • 1...cxd4!
    • 1.Sxc5?
      • threat
        • 2.Qh5#
      • 1...Ke5
        • 2.Qh5#
      • 1...dxc5!
    • 1.Se5?
      • threat
        • 2.Sdc6#
      • 1...Kxe5
        • 2.Qh5#
      • 1...cxd4
        • 2.Rb5#
      • 1...dxe5
        • 2.Qd8#
      • 1...Bxb4!
    • 1.Sc2?
      • threat
        • 2.Qa8#
      • 1...Kc6
        • 2.Qa8#
      • 1...cxd3!
    • 1.Se2?
      • threat
        • 2.Qa8#
      • 1...Kc6
        • 2.Qa8#
      • 1...cxd3!
    • 1.Sf5?
      • threat
        • 2.Qa8#
      • 1...Kc6
        • 2.Qa8#
      • 1...cxd3!
    • 1.Bxc5?
      • threat
        • 2.Qh5#
        • 2.Qa8#
      • 1...cxd3
        • 2.Qh5#
      • 1...Bd8
        • 2.Qh5#
      • 1...dxc5!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sde5#
      • 1...Kxc6
        • 2.Qa8#
      • 1...Bxb4
        • 2.Sdxb4#
      • 1...cxd3
        • 2.Bxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(b);XS(B)::QAR(J)
    • P(f);XS(E)::QAB(J)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR(J)
      • Vars
        • K(g);N_SPINR(c),P-FLIGHT::QAR(J)
      • Refutation
        • P(f);P_SPINP(f),XS(E)
    • Try
      • S(B);
      • Threat
        • QAR(J)
      • Vars
        • K(g);N_SPINR(c),P-FLIGHT::QAR(J)
      • Refutation
        • P(f);P_SPINP(f),XS(E)
    • Try
      • S(B);
      • Threat
        • QAR(J)
      • Vars
        • K(g);N_SPINR(c),P-FLIGHT::QAR(J)
      • Refutation
        • P(f);P_SPINP(f),XS(E)
    • Try
      • S(B);
      • Threat
        • QAR(J)
      • Vars
        • K(g);N_SPINR(c),P-FLIGHT::QAR(J)
      • Refutation
        • P(f);P_SPINP(f),XS(E)
    • Try
      • S(B);XP(f)
      • Threat
        • QAR(J)
      • Vars
        • K(g);N_SPINR(c),P-FLIGHT::QAR(J)
      • Refutation
        • P(h);XS(B)
    • Try
      • S(B);
      • Threat
        • R(A)+S(E)
      • Vars
        • K(g);N_SPINR(c),OGATEB,P-FLIGHT,XS(B)::QAR(J)
        • P(f);OGATEB,P_SPINP(f),XS(E)::R(D)
        • P(h);OGATEB,SBLOCK,XS(B)::QAR(J)
      • Refutation
        • B(e);XR(D)
    • Try
      • S(E);
      • Threat
        • QAB(J)
      • Vars
        • K(g);S_FLIGHT::QAB(J)
      • Refutation
        • P(b);P_SPINP(b),XS(B)
    • Try
      • S(E);
      • Threat
        • QAB(J)
      • Vars
        • K(g);S_FLIGHT::QAB(J)
      • Refutation
        • P(b);P_SPINP(b),XS(B)
    • Try
      • S(E);
      • Threat
        • QAB(J)
      • Vars
        • K(g);S_FLIGHT::QAB(J)
      • Refutation
        • P(b);P_SPINP(b),XS(B)
    • Try
      • B(F);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);XS(B)::QAR(J)
        • B(e);::QAR(J)
      • Refutation
        • P(h);XB(F)
  • Actual
    • S(E);
    • Threat
      • R(A)+S(B)
    • Vars
      • K(g);OGATEB,S_FLIGHT,XS(E)::QAB(J)
      • B(e);XR(D)::R(A)+S(B),DCHECK,XB(e)
      • P(b);P_SPINP(b),XS(B)::B(C),XR(c)
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