MESON Chess Problem Database

Problem Display
PID: 35208 (1b1N3n/8/2RPNK1p/2Bk1P2/3p3r/1rpP1PpP/Q7/n7 w - - 0 1)

Retter, Yosef

Seider, Shlomo

2nd Prize, Probleemblad TT, 1989-1990

1b1N3n/8/2RPNK1p/2Bk1P2/3p3r/1rpP1PpP/Q7/n7

#2

11 + 10

3674 As in all Arts 1996
4827 FIDE Album (1989-1991) 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh3
      • 2.Sf4#
    • 1...Re4
      • 2.fxe4#
    • 1...Rf4
      • 2.Sxf4#
    • 1...Rh5
      • 2.Sf4#
    • 1...Bxd6
      • 2.Rxd6#
    • 1...Ba7
      • 2.Sc7#
    • 1...Bc7
      • 2.Sxc7#
    • 1...Sc2
      • 2.Qxb3#
  • Tries
    • 1.Qg2?
      • threat
        • 2.f4#
      • 1...Re4
        • 2.fxe4#
      • 1...Rf4
        • 2.Sxf4#
      • 1...Rb2!
    • 1.Qa5?
      • threat
        • 2.Bb4#
      • 1...Bxd6
        • 2.Rxd6#
      • 1...Ra3
        • 2.Bxa3#
      • 1...Rb4
        • 2.Bxb4#
      • 1...Rb6
        • 2.Bxb6#
      • 1...Rb7
        • 2.Bb6#
      • 1...Ba7
        • 2.Sc7#
      • 1...Bc7
        • 2.Sxc7#
      • 1...Rb5!
    • 1.Qa8?
      • threat
        • 2.Rb6#
      • 1...Ra3
        • 2.Ra6#
      • 1...Rb6
        • 2.Rxb6#
      • 1...Rb7!
    • 1.f4?
      • threat
        • 2.Qg2#
      • 1...Rxf4
        • 2.Sxf4#
      • 1...Sc2
        • 2.Qxb3#
      • 1...g2
        • 2.Qxg2#
      • 1...c2!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Qa5#
      • 1...Bxd6
        • 2.Rxd6#
      • 1...Ba7
        • 2.Sc7#
      • 1...Bc7
        • 2.Sxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(f);N_GUARD,XP(D)::S(I)
    • R(f);OGATE::P(C),XR(f)
    • R(f);N_GUARD,P_PINP(F)::S(I),XR(f)
    • R(f);N_GUARD::S(I)
    • B(i);OGATE,XP(H)::R1(G),XB(i)
    • B(i);N_GUARD::S(I)
    • B(i);N_GUARD::S(I),XB(i)
    • S(a);N_GUARD::QAB(A),XR(b)
  • Tries
    • Try
      • Q(A);N_PINR(b)
      • Threat
        • QAB(A)+P(C)
      • Vars
        • R(f);OGATE::P(C),XR(f)
        • R(f);N_GUARD,P_PINP(F)::S(I),XR(f)
      • Refutation
        • R(b);
    • Try
      • Q(A);N_PINR(b)
      • Threat
        • QAR(A)+B(E)
      • Vars
        • B(i);OGATE,XP(H)::R1(G),XB(i)
        • R(b);N_GUARD::QAR(A)+B(E),XR(b)
        • R(b);::QAR(A)+B(E),XR(b)
        • R(b);N_GUARD::QAR(A)+B(E)
        • B(i);N_GUARD::S(I)
        • B(i);N_GUARD::S(I),XB(i)
      • Refutation
        • R(b);
    • Try
      • Q(A);N_PINR(b)
      • Threat
        • QAB(A)+R(G)
      • Vars
        • R(b);N_GUARD::QAB(A)+R(G)
        • R(b);::QAB(A)+R(G),XR(b)
      • Refutation
        • R(b);
    • Try
      • P(C);
      • Threat
        • QAB(A)
      • Vars
        • R(f);P_PINP(F),XP(C)::S(I),XR(f)
        • S(a);N_GUARD::QAB(A),XR(b)
        • P(d);::QAB(A),XP(d)
      • Refutation
        • P(c);
  • Actual
    • B(E);
    • Threat
      • QAR(A)
    • Vars
      • B(i);OGATE,XP(H)::R1(G),XB(i)
      • B(i);N_GUARD::S(I)
      • B(i);N_GUARD::S(I),XB(i)
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