MESON Chess Problem Database

Problem Display
PID: 137854 (2N2KB1/nr2PR1N/1Pp1RP1r/1p1k3p/1P2p3/2Bn1b1Q/6P1/8 w - - 0 1)

Savournin, Jacques

3rd HM., The Problemist, 2010

2N2KB1/nr2PR1N/1Pp1RP1r/1p1k3p/1P2p3/2Bn1b1Q/6P1/8

#2

13 + 10

56 The Problemist 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb6
      • 2.Sxb6#
  • Tries
    • 1.Rxc6?
      • threat
        • 2.Qe6#
      • 1...Kxc6
        • 2.Qe6#
      • 1...Rxf6
        • 2.Rfxf6#
      • 1...Rxe7
        • 2.Sxe7#
      • 1...Sxc6
        • 2.Rg7#
      • 1...Sc5
        • 2.Rxc5#
      • 1...Sf4
        • 2.Rc5#
      • 1...Bg4!
    • 1.Rg7?
      • threat
        • 2.Re5#
        • 2.Rd6#
      • 1...Rxf6+
        • 2.Rxf6#
      • 1...Kc4
        • 2.Rxc6#
      • 1...Sxb4
        • 2.Re5#
      • 1...Se5
        • 2.Rxe5#
        • 2.Rd6#
      • 1...e3
        • 2.Rxe3#
        • 2.Re5#
      • 1...c5
        • 2.Rd6#
      • 1...Sxc8!
  • Keys
    • 1.Rxe4!
      • threat
        • 2.Qe6#
      • 1...Kxe4
        • 2.Qxf3#
      • 1...Rxf6
        • 2.Sxf6#
      • 1...Rxe7
        • 2.Rfxe7#
      • 1...Bxe4
        • 2.Rg7#
      • 1...Sxb4
        • 2.Qf5#
      • 1...Bg4
        • 2.Qxd3#
      • 1...Sf4
        • 2.Qf5#
      • 1...Sc5
        • 2.Qf5#
      • 1...Se5
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • R(j);XP(E)::S(K),XR(j)
  • Tries
    • Try
      • R(F);XP(g)
      • Threat
        • QAB1(C)
      • Vars
        • K(e);S_FLIGHT,XR(F)::QAR2(C)
        • R(h);OGATE,P_PINR(I),XP(G)::B(M)+R(I),XR(h)
        • R(j);XP(H)::S(K),XR(j)
        • S(i);SBLOCK,XR(F)::B(M)+R(I)
        • S(a);N_GUARD::R1(F),XS(a)
        • S(a);N_GUARD::R1(F)
      • Refutation
        • B(b);
    • Try
      • R(I);
      • Threat
        • DUALS(2)
      • Vars
        • R(h);CHECK,OGATE,XP(G)::B(M)+R(F),XR(h)
        • K(e);S_FLIGHT::B(M)+R(F),DCHECK,XP(g)
        • S(a);XP(D)::B(M)+R(F),DCHECK
        • P(g);::B(M)+R(F),DCHECK
      • Refutation
        • S(i);XS(K)
  • Actual
    • R(F);XP(c)
    • Threat
      • QAB1(C)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XR(F)::QAB1(C),XB(b)
      • R(h);P_PINR(I),XP(G)::S(J),XR(h)
      • R(j);OGATE,XP(H)::B(M)+R(I),XR(j)
      • B(b);SBLOCK,XR(F)::B(M)+R(I)
      • S(a);N_GUARD,XP(D)::QAR2(C)
      • B(b);OGATE::QAR2(C),XS(a)
      • S(a);N_GUARD::QAR2(C)
      • S(a);SBLOCK::R1(F)
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