MESON Chess Problem Database

Problem Display
PID: 102527 (8/1N6/p1B1p3/p3P3/RnP4p/1p1kP2R/nK2p1P1/4Q3 w - - 0 1)

Stocchi, Ottavio

2nd Prize, L'Echiquier de Paris, 1953

8/1N6/p1B1p3/p3P3/RnP4p/1p1kP2R/nK2p1P1/4Q3

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Qxe2#
    • 1...Sc1
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sc2
      • 2.Sc5#
    • 1...Sd5
      • 2.Sc5#
    • 1...Sxc6
      • 2.Sc5#
  • Tries
    • 1.Bf3?
      • threat
        • 2.Qxe2#
      • 1...Kxc4
        • 2.Qxe2#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Kxe3!
    • 1.Be4+?
      • 1...Kxc4
        • 2.Qxe2#
      • 1...Kxe4!
    • 1.Rf3?
      • 1...Kxc4
        • 2.Qxe2#
      • 1...Sxc6
        • 2.Sc5#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sc2
        • 2.Sc5#
      • 1...Sd5
        • 2.Sc5#
      • 1...h3!
    • 1.Rxb4?
      • threat
        • 2.Sc5#
      • 1...Sxb4
        • 2.Qc3#
      • 1...axb4!
    • 1.Qd2+?
      • 1...Kxc4
        • 2.Rxh4#
        • 2.Qxe2#
        • 2.Qd4#
      • 1...Kxd2!
    • 1.g4?
      • 1...Kxc4
        • 2.Qxe2#
      • 1...Sxc6
        • 2.Sc5#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sc2
        • 2.Sc5#
      • 1...Sd5
        • 2.Sc5#
      • 1...hxg4 ep!
  • Keys
    • 1.c5!
      • 1...Kc4
        • 2.Qxe2#
      • 1...Sxc6
        • 2.e4#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sc2
        • 2.Be4#
      • 1...Sd5
        • 2.Rd4#

This is a version of 18089

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(d);P_SPINS(e),S_FLIGHT,XP(G)::QAB(A),XP(b)
    • S(a);N_GUARD::QAR1(A)
    • S(a);N_GUARD::QAR1(A),XS(a)
    • S(e);::S(J)
    • S(e);XB(I)::S(J)
  • Tries
    • Try
      • B(I);
      • Threat
        • QAB1(A),XP(b)
      • Vars
        • K(d);P_SPINS(e),S_FLIGHT,XP(G)::QAB(A),XP(b)
        • S(a);N_GUARD::QAR1(A)
        • S(a);N_GUARD::QAR1(A),XS(a)
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(b),XP(D)
    • Try
      • B(I);CHECK
      • Vars
        • K(d);P_SPINS(e),S_FLIGHT,XP(G)::QAB(A),XP(b)
      • Refutation
        • K(d);S_FLIGHT,XB(I)
    • Try
      • R(E);
      • Vars
        • K(d);P_SPINS(e),S_FLIGHT,XP(G)::QAB(A),XP(b)
        • S(e);XB(I)::S(J)
        • S(a);N_GUARD::QAR1(A)
        • S(a);N_GUARD::QAR1(A),XS(a)
        • S(e);::S(J)
      • Refutation
        • P(f);
    • Try
      • R(F);XS(e)
      • Threat
        • S(J)
      • Vars
        • S(a);N_GUARD,XR(F)::QAR1(A)
      • Refutation
        • P(g);XR(F)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(d);P-FLIGHT,XQ(A)
    • Try
      • P(C);
      • Vars
        • K(d);P_SPINS(e),S_FLIGHT,XP(G)::QAB(A),XP(b)
        • S(e);XB(I)::S(J)
        • S(a);N_GUARD::QAR1(A)
        • S(a);N_GUARD::QAR1(A),XS(a)
        • S(e);::S(J)
      • Refutation
        • P(f);EP,XP(C)
  • Actual
    • P(G);
    • Vars
      • K(d);P_SPINS(e),S_FLIGHT::QAB(A),XP(b)
      • S(e);XB(I)::R(E)+P(D)
      • S(a);N_GUARD::QAR1(A)
      • S(a);N_GUARD::QAR1(A),XS(a)
      • S(e);::B(I)
      • S(e);OGATE::R1(F)
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