MESON Chess Problem Database

Problem Display
PID: 70027 (2R2nBB/1p5n/3pPr2/RNNk4/Q1pP2p1/2p2P2/bP6/6K1 w - - 0 1)

Guida, Marco

2nd Prize, The Problemist, 2006

2R2nBB/1p5n/3pPr2/RNNk4/Q1pP2p1/2p2P2/bP6/6K1

#2

12 + 10

56 The Problemist 2007
23 Die Schwalbe 2011
15323 FIDE Album (2004-2006) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf3
      • 2.Sc7#
    • 1...Rf4
      • 2.Sxc3#
      • 2.Sc7#
    • 1...Rf5
      • 2.Sxc3#
      • 2.Sc7#
    • 1...Rxe6
      • 2.Sxc3#
      • 2.Sc7#
    • 1...Rg6
      • 2.Sxc3#
      • 2.Sc7#
    • 1...Rh6
      • 2.Sxc3#
      • 2.Sc7#
    • 1...Rf7
      • 2.Sxc3#
    • 1...dxc5
      • 2.Rxc5#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Sxc3#
        • 2.Sc7#
        • 2.Qxc4#
      • 1...Rxf3
        • 2.Sxc3#
      • 1...cxb2
        • 2.Sc3#
        • 2.Sc7#
        • 2.Qxc4#
      • 1...cxb3
        • 2.Sxc3#
        • 2.Sc7#
        • 2.Qc4#
      • 1...gxf3
        • 2.Sxc3#
      • 1...Rf7
        • 2.Sc7#
        • 2.Qxc4#
      • 1...c2
        • 2.Sc3#
        • 2.Sc7#
        • 2.Qxc4#
      • 1...Bxb3!
    • 1.Sd3?
      • threat
        • 2.Sb4#
      • 1...Rxf3
        • 2.Sxc3#
      • 1...cxd3
        • 2.Sxc3#
        • 2.Sc7#
        • 2.Qxa2#
      • 1...Rf7
        • 2.Sc7#
      • 1...gxf3!
    • 1.Bxf6?
      • threat
        • 2.Sxc3#
        • 2.Sc7#
      • 1...cxb2
        • 2.Sc3#
        • 2.Sc7#
      • 1...dxc5
        • 2.Rxc5#
      • 1...c2
        • 2.Sc3#
        • 2.Sc7#
      • 1...Sxf6!
    • 1.Rd8?
      • threat
        • 2.Rxd6#
      • 1...Kc6
        • 2.Rxd6#
      • 1...Sd7!
    • 1.Qd1?
      • threat
        • 2.Sxc3#
      • 1...cxb2
        • 2.Sc3#
      • 1...dxc5
        • 2.Rxc5#
      • 1...c2
        • 2.Sc3#
      • 1...Rxf3!
    • 1.bxc3?
      • threat
        • 2.Sc7#
      • 1...dxc5
        • 2.Rxc5#
      • 1...Rf7!
    • 1.b3?
      • threat
        • 2.Qxc4#
      • 1...cxb3
        • 2.Sxc3#
        • 2.Sc7#
      • 1...Bxb3!
    • 1.e7+?
      • 1...Re6
        • 2.Sxc3#
        • 2.Sc7#
      • 1...Rf7
        • 2.Sxc3#
        • 2.Sc7#
      • 1...Se6!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sexc3#
      • 1...Rxf3
        • 2.Sbxc3#
      • 1...cxb2
        • 2.Sec3#
      • 1...Rf7
        • 2.Sc7#
      • 1...c2
        • 2.Sec3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(g);XP(C)::S(G)
    • R(g);::S(G),XP(b)
    • P(f);OGATE,XS(H)::R1(J),XP(f)
  • Tries
    • Try
      • S(H);
      • Threat
        • DUALS(3)
      • Vars
        • R(g);XP(C)::R(F)+S(G),DCHECK,XP(b)
        • P(d);XP(C)::R(F)+S(G),DCHECK,XP(b)
      • Refutation
        • B(a);XS(H)
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • R(g);XP(C)::R(F)+S(G),DCHECK,XP(b)
        • R(g);::R(F)+S(G),DCHECK
      • Refutation
        • P(d);XP(C)
    • Try
      • B(L);XR(g)
      • Threat
        • DUALS(2)
      • Vars
        • P(f);OGATE,XS(H)::R1(J),XP(f)
      • Refutation
        • S(i);XB(L)
    • Try
      • R(J);P_PINP(f)
      • Threat
        • R1(J),XP(f)
      • Vars
        • K(e);N_SPINP(f),S_FLIGHT::R1(J),XP(f)
      • Refutation
        • S(j);N_SPINP(f)
    • Try
      • Q(D);
      • Threat
        • S(G),XP(b)
      • Vars
        • P(b);XP(B)::S(G)
        • P(f);OGATE,XS(H)::R1(J),XP(f)
        • P(b);::S(G)
      • Refutation
        • R(g);XP(C)
    • Try
      • P(B);XP(b)
      • Threat
        • S(G)
      • Vars
        • P(f);OGATE,XS(H)::R1(J),XP(f)
      • Refutation
        • R(g);
    • Try
      • P(B);
      • Threat
        • QAB1(D),XP(c)
      • Refutation
        • B(a);XP(B)
    • Try
      • P(I);CHECK
      • Refutation
        • S(j);P_SPINS(j)
  • Actual
    • S(H);
    • Threat
      • S(H),XP(b)
    • Vars
      • R(g);XP(C)::R(F)+S(G),DCHECK,XP(b)
      • P(b);XP(B)::S(H)
      • R(g);::R(F)+S(G),DCHECK
      • P(b);::S(H)
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