MESON Chess Problem Database

Problem Display
PID: 121689 (3R1bB1/2qn1r2/3NP1Q1/3Pk3/1Bp3P1/2KnPrP1/3N4/3R4 w - - 0 1)

Stocchi, Ottavio

La Settimana Enigmistica, 1936

3R1bB1/2qn1r2/3NP1Q1/3Pk3/1Bp3P1/2KnPrP1/3N4/3R4

#2

13 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qe4#
    • 1...R3f6
      • 2.Qe4#
    • 1...R7f6
      • 2.Qe4#
    • 1...Sf4
      • 2.Sxf3#
    • 1...S3c5
      • 2.S2xc4#
    • 1...S7c5
      • 2.S6xc4#
  • Tries
    • 1.Sxf3+?
      • 1...Kxd5
        • 2.Qe4#
      • 1...Rxf3!
    • 1.S2xc4+?
      • 1...Kxd5
        • 2.Qe4#
      • 1...Qxc4+!
    • 1.S6xc4+?
      • 1...Kxd5
        • 2.Qe4#
      • 1...Qxc4+!
    • 1.Sxf7+?
      • 1...Kxd5
        • 2.Qe4#
      • 1...Rxf7!
  • Keys
    • 1.e7!
      • threat
        • 2.Qe6#
      • 1...Kxd5
        • 2.Qe4#
      • 1...Qxd6
        • 2.Qxd6#
      • 1...Rxe7
        • 2.Sxf3#
      • 1...R3f6
        • 2.Qe4#
      • 1...R7f6
        • 2.Qe4#
      • 1...Sf4
        • 2.Sxf3#
      • 1...S3c5
        • 2.S2xc4#
      • 1...S7c5
        • 2.S6xc4#
      • 1...Sf6
        • 2.Sxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT,XP(H)::QAB1(K)
    • R(b);SBLOCK::QAR1(K)
    • R(g);SBLOCK::QAR1(K)
    • S(a);P_PINP(D),S_CUTR(g)::S(B),XR(b)
    • S(a);P_PINP(D),S_CUTQ(e)::S(B),XP(c)
    • S(f);S_CUTQ(e)::S(I),XP(c)
  • Tries
    • Try
      • S(B);CHECK,XR(b)
      • Vars
        • K(d);P-FLIGHT,P_SPINS(a),XP(H)::QAB1(K)
      • Refutation
        • R(g);XS(B)
    • Try
      • S(B);CHECK,P_SPINS(B),XP(c)
      • Vars
        • K(d);P-FLIGHT,P_SPINS(a),XP(H)::QAB1(K)
      • Refutation
        • Q(e);CHECK,XS(B)
    • Try
      • S(I);CHECK,P_SPINS(I),XP(c)
      • Vars
        • K(d);P-FLIGHT,P_SPINS(f),XP(H)::QAB1(K)
      • Refutation
        • Q(e);CHECK,XS(I)
    • Try
      • S(I);CHECK,XR(g)
      • Vars
        • K(d);P-FLIGHT,P_SPINS(f),XP(H)::QAB1(K)
      • Refutation
        • R(b);XS(I)
  • Actual
    • P(J);
    • Threat
      • QAR1(K)
    • Vars
      • K(d);P-FLIGHT,P_SPINR(g),XP(H)::QAB1(K)
      • Q(e);OGATE,XS(I)::QAB1(K),XQ(e)
      • R(g);N_GUARD,XP(J)::S(B),XR(b)
      • R(b);SBLOCK::QAR1(K)
      • R(g);SBLOCK::QAR1(K)
      • S(a);P_PINP(D),S_CUTR(g)::S(B),XR(b)
      • S(a);P_PINP(D),S_CUTQ(e)::S(B),XP(c)
      • S(f);S_CUTQ(e)::S(I),XP(c)
      • S(f);S_CUTR(b)::S(I),XR(g)
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Developed and maintained by Brian Stephenson.
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