MESON Chess Problem Database

Problem Display
PID: 63459 (KB6/p1rNPP2/2kp1N1R/P2R4/1np5/b7/8/1Q3b2 w - - 0 1)

Caillaud, Michel

Shanshin, Valery Yurevich

Slesarenko, Anatoly Vasilevich

2nd Comm., Tel Aviv, 1996

KB6/p1rNPP2/2kp1N1R/P2R4/1np5/b7/8/1Q3b2

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Qb5#
    • 1...Sc2
      • 2.Qb5#
    • 1...Sd3
      • 2.Qb5#
    • 1...Sa6
      • 2.Qb5#
  • Tries
    • 1.Qe4?
      • threat
        • 2.Rc5#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Rxd7!
    • 1.Qxb4?
      • threat
        • 2.Rxd6#
        • 2.Qa4#
        • 2.Qb5#
      • 1...Rxd7
        • 2.Qa4#
        • 2.Qb5#
      • 1...Rb7
        • 2.Rxd6#
        • 2.Qxb7#
      • 1...c3
        • 2.Rxd6#
      • 1...a6
        • 2.Rxd6#
        • 2.Qa4#
        • 2.Qb6#
      • 1...Bxb4!
    • 1.e8Q?
      • threat
        • 2.Se5#
      • 1...Rxd7
        • 2.Qxd7#
      • 1...Sxd5!
    • 1.e8B?
      • threat
        • 2.Se5#
      • 1...Rxd7
        • 2.Bxd7#
      • 1...Sxd5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Rhxd6#
      • 1...Kxd5
        • 2.Rxd6#
      • 1...Kxd7
        • 2.e8Q#
      • 1...Rxd7
        • 2.Rc5#
      • 1...Sxd5
        • 2.Se5#
      • 1...Sa2
        • 2.Qb5#
      • 1...Sc2
        • 2.Qb5#
      • 1...Sd3
        • 2.Qb5#
      • 1...Sa6
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE::QAB1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A)+R(C),DCHECK
      • Vars
        • S(c);OGATE,P_SPINS(c),XR(C)::QAB1(A),XS(c)
      • Refutation
        • R(h);XS(F)
    • Try
      • Q(A);XS(c)
      • Threat
        • DUALS(3)
      • Vars
        • P(d);::R1(C),XP(f)
      • Refutation
        • B(b);XQ(A)
    • Try
      • P(G);
      • Threat
        • QAB(G)+S(F),DCHECK
      • Vars
        • R(h);OGATE,P_SPINR(h),XS(F)::QAB1(G),XR(h)
      • Refutation
        • S(c);XR(C)
    • Try
      • P(G);
      • Threat
        • B(G)+S(F),DCHECK
      • Vars
        • R(h);OGATE,P_SPINR(h),XS(F)::B(G),XR(h)
      • Refutation
        • S(c);XR(C)
  • Actual
    • S(D);P_PINP(f)
    • Threat
      • R1(E),XP(f)
    • Vars
      • K(e);N_SPINP(f),S_FLIGHT,XR(C)::R1(E),XP(f)
      • K(e);S_FLIGHT,XS(F)::P=Q
      • R(h);SBLOCK,XS(F)::R1(C)
      • S(c);SBLOCK,XR(C)::S(F)
      • S(c);OGATE::QAB1(A)
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