MESON Chess Problem Database

Problem Display
PID: 261515 (5r2/p3r2B/6b1/K2N1P2/2RPk3/4N3/n2BQ1P1/8 w - - 0 1)

Vollenweider, Odette (aka Baumgartner, Gabriel)

Neue Zurcher Zeitung, 1964

5r2/p3r2B/6b1/K2N1P2/2RPk3/4N3/n2BQ1P1/8

#2

10 + 6

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sd1+?
      • 1...Kxf5
        • 2.g4#
      • 1...Kxd5!
    • 1.Sf1+?
      • 1...Kxf5
        • 2.Sg3#
        • 2.g4#
      • 1...Kxd5!
    • 1.Sc2+?
      • 1...Kxf5
        • 2.g4#
      • 1...Kxd5!
    • 1.Sg4+?
      • 1...Kxf5
        • 2.Sh6#
        • 2.Sxe7#
      • 1...Kxd5!
    • 1.Sc3+?
      • 1...Kf4
        • 2.Qg4#
      • 1...Sxc3!
    • 1.Sb4?
      • threat
        • 2.Qf3#
        • 2.Qg4#
      • 1...Re5+
        • 2.d5#
      • 1...Rxf5+
        • 2.Sed5#
      • 1...Kf4
        • 2.Qg4#
      • 1...Bh5
        • 2.Sg4#
      • 1...Sxb4!
    • 1.Sf6+?
      • 1...Kf4
        • 2.Qg4#
      • 1...Rxf6!
    • 1.Qf1?
      • threat
        • 2.Qb1#
      • 1...Sc1
        • 2.Sc3#
      • 1...Rb8
        • 2.Sf6#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sb4
        • 2.Sc3#
      • 1...Rb7!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Qf3#
      • 1...Re5+
        • 2.d5#
      • 1...Rxf5+
        • 2.Sed5#
      • 1...Kxf4
        • 2.Qg4#
      • 1...Bh5
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);N_GUARD,P_SPINB(c),S_FLIGHT,XP(I)::P(C)
      • Refutation
        • K(b);S_FLIGHT,XS(H)
    • Try
      • S(D);CHECK
      • Refutation
        • K(b);S_FLIGHT,XS(H)
    • Try
      • S(D);CHECK
      • Vars
        • K(b);N_GUARD,P_SPINB(c),S_FLIGHT,XP(I)::P(C)
      • Refutation
        • K(b);S_FLIGHT,XS(H)
    • Try
      • S(D);CHECK
      • Refutation
        • K(b);S_FLIGHT,XS(H)
    • Try
      • S(H);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR1(B)
      • Refutation
        • S(a);XS(H)
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);CHECK,SBLOCK::R(E)+P(F)
        • R(f);CHECK,SBLOCK,XP(I)::QAR(B)+S(D)
        • K(b);P-FLIGHT::QAR1(B)
        • B(c);::QAR(B)+S(D)
      • Refutation
        • S(a);XS(H)
    • Try
      • S(H);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR1(B)
      • Refutation
        • R(f);XS(H)
    • Try
      • Q(B);
      • Threat
        • QAB(B)
      • Vars
        • S(a);N_GUARD::S(H)
        • R(f);N_GUARD::S(H)
        • S(a);N_GUARD::S(H),XS(a)
      • Refutation
        • R(e);
  • Actual
    • S(H);
    • Threat
      • QAB1(B)
    • Vars
      • R(e);CHECK,SBLOCK::R(E)+P(F)
      • R(f);CHECK,SBLOCK,XP(I)::QAR(B)+S(D)
      • K(b);OGATEB,P-FLIGHT,XS(H)::QAR1(B)
      • B(c);::QAR(B)+S(D)
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