MESON Chess Problem Database

Problem Display
PID: 46015 (2B1R3/1Qp5/3pN3/2pPN1Pp/2p1kBP1/K2R1pP1/3Pp1p1/5bq1 w - - 0 1)

Pilchenko, Viacheslav Karlovich

1st Prize, Osh-3000 JT (A), 2000

2B1R3/1Qp5/3pN3/2pPN1Pp/2p1kBP1/K2R1pP1/3Pp1p1/5bq1

#2

13 + 11

56 The Problemist 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Re3#
    • 1...Qe3
      • 2.Rxe3#
    • 1...Qh1
      • 2.Re3#
    • 1...f2
      • 2.Re3#
    • 1...c6
      • 2.Qh7#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Sxc5#
      • 1...Kxd3
        • 2.Qb1#
      • 1...cxd3
        • 2.Sxc7#
      • 1...Qd4!
    • 1.Sg6?
      • threat
        • 2.Sxc5#
      • 1...Kxd3
        • 2.Qb1#
      • 1...cxd3!
    • 1.Sd7?
      • threat
        • 2.Sexc5#
      • 1...Kxd3
        • 2.Qb1#
      • 1...cxd3
        • 2.Sf6#
      • 1...hxg4!
    • 1.Sf7?
      • threat
        • 2.Sxc5#
      • 1...Kxd3
        • 2.Qb1#
      • 1...cxd3!
    • 1.Sd4?
      • threat
        • 2.Bf5#
      • 1...cxd3
        • 2.Sexf3#
      • 1...c6!
    • 1.Sxc5+?
      • 1...dxc5
        • 2.Bf5#
      • 1...Qxc5+!
    • 1.Sxc7?
      • threat
        • 2.Bf5#
      • 1...cxd3
        • 2.Sc6#
      • 1...hxg4!
    • 1.Qb1?
      • threat
        • 2.Rd4#
      • 1...cxd3
        • 2.Qxd3#
      • 1...Qd4
        • 2.Rxd4#
      • 1...Qe3!
  • Keys
    • 1.Sxf3!
      • threat
        • 2.Sxc5#
      • 1...Kxd3
        • 2.Qb1#
      • 1...cxd3
        • 2.Sed4#
      • 1...Qe3
        • 2.Rxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(b);N_GUARD::R1(C)
    • Q(b);N_GUARD,P_PINR(C)::R1(C),XQ(b)
    • P(e);S_CUTQ(b)::R1(C)
    • P(k);OGATE::QAB(K)
  • Tries
    • Try
      • S(H);
      • Threat
        • R(M)+S(J),DCHECK,XP(h)
      • Vars
        • K(g);OGATEB,S_FLIGHT,XR(C)::QAB(K)
        • P(f);SBLOCK,XR(C)::R(M)+S(J),XP(k)
      • Refutation
        • Q(b);
    • Try
      • S(H);
      • Threat
        • R(M)+S(J),DCHECK,XP(h)
      • Vars
        • K(g);OGATEB,S_FLIGHT,XR(C)::QAB(K)
      • Refutation
        • P(f);XR(C)
    • Try
      • S(H);
      • Threat
        • R(M)+S(J),DCHECK,XP(h)
      • Vars
        • K(g);OGATEB,S_FLIGHT,XR(C)::QAB(K)
        • P(f);SBLOCK,XR(C)::S(H)
      • Refutation
        • P(i);XP(F)
    • Try
      • S(H);
      • Threat
        • R(M)+S(J),DCHECK,XP(h)
      • Vars
        • K(g);OGATEB,S_FLIGHT,XR(C)::QAB(K)
      • Refutation
        • P(f);XR(C)
    • Try
      • S(J);
      • Threat
        • B(L)
      • Vars
        • P(f);SBLOCK,XR(C)::R(M)+S(H),XP(e)
      • Refutation
        • P(k);
    • Try
      • S(J);CHECK,XP(h)
      • Vars
        • P(j);XS(J)::B(L)
      • Refutation
        • Q(b);CHECK,XS(J)
    • Try
      • S(J);XP(k)
      • Threat
        • B(L)
      • Vars
        • P(f);SBLOCK,XR(C)::R(M)+S(H)
      • Refutation
        • P(i);XP(F)
    • Try
      • Q(K);
      • Threat
        • QAB(K)+R(C),DCHECK
      • Vars
        • P(f);OGATE,P_SPINP(f),XR(C)::QAB1(K),XP(f)
        • Q(b);::QAB(K)+R(C),DCHECK,XQ(b)
      • Refutation
        • Q(b);P_PINR(C)
  • Actual
    • S(H);XP(e)
    • Threat
      • R(M)+S(J),DCHECK,XP(h)
    • Vars
      • K(g);OGATEB,S_FLIGHT,XR(C)::QAB(K)
      • P(f);SBLOCK,XR(C)::R(M)+S(J)
      • Q(b);N_GUARD,P_PINR(C)::R1(C),XQ(b)
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