MESON Chess Problem Database

Problem Display
PID: 144332 (8/3p4/p2Pp1p1/Q5Pp/3N1kpP/3P4/4B3/3NK1R1 w - - 0 1)

Pimenov, Sergey Ivanovich

Pimenov, Vitaly Ivanovich

Magyar Sakkvilag, 1931

8/3p4/p2Pp1p1/Q5Pp/3N1kpP/3P4/4B3/3NK1R1

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.Rf1#
    • 1...e5
      • 2.Qd2#
  • Tries
    • 1.Kf1?
      • 1...e5
        • 2.Qd2#
      • 1...g3!
    • 1.Kd2?
      • 1...g3
        • 2.Rf1#
      • 1...e5!
    • 1.Kf2?
      • 1...e5
        • 2.Qd2#
      • 1...g3+!
    • 1.Sb2?
      • 1...Ke3
        • 2.Qe5#
      • 1...e5
        • 2.Qd2#
      • 1...g3!
    • 1.Sf2?
      • 1...Ke3
        • 2.Qe5#
      • 1...e5
        • 2.Qd2#
      • 1...g3!
    • 1.Sc3?
      • 1...Ke3
        • 2.Qe5#
      • 1...e5
        • 2.Sd5#
      • 1...g3!
    • 1.Sc2?
      • 1...g3
        • 2.Rf1#
      • 1...e5!
    • 1.Sb3?
      • 1...g3
        • 2.Rf1#
      • 1...e5!
    • 1.Sc6?
      • threat
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#
      • 1...dxc6!
    • 1.Bf1?
      • 1...e5
        • 2.Qd2#
      • 1...g3!
    • 1.Rg2?
      • 1...e5
        • 2.Qd2#
      • 1...g3!
    • 1.Qc5?
      • 1...g3
        • 2.Rf1#
      • 1...e5
        • 2.Qc1#
      • 1...a5!
  • Keys
    • 1.Se3!
      • 1...Kxe3
        • 2.Qe5#
      • 1...g3
        • 2.Sg2#
      • 1...e5
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::R(C)
    • P(e);SBLOCK::QAB(H)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(e);SBLOCK::QAB(H)
      • Refutation
        • P(b);
    • Try
      • K(B);S_FLIGHT
      • Vars
        • P(b);SBLOCK::R(C)
      • Refutation
        • P(e);
    • Try
      • K(B);S_FLIGHT
      • Vars
        • P(e);SBLOCK::QAB(H)
      • Refutation
        • P(b);CHECK
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(H)
        • P(e);SBLOCK::QAB(H)
      • Refutation
        • P(b);
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(H)
        • P(e);SBLOCK::QAB(H)
      • Refutation
        • P(b);
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(H)
        • P(e);N_GUARD,SBLOCK::S(A)
      • Refutation
        • P(b);
    • Try
      • S(F);
      • Vars
        • P(b);SBLOCK::R(C)
      • Refutation
        • P(e);
    • Try
      • S(F);
      • Vars
        • P(b);SBLOCK::R(C)
      • Refutation
        • P(e);
    • Try
      • S(F);
      • Threat
        • QAB1(H)
      • Vars
        • P(e);::QAB1(H),XP(e)
      • Refutation
        • P(g);XS(F)
    • Try
      • B(D);
      • Vars
        • P(e);SBLOCK::QAB(H)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • P(e);SBLOCK::QAB(H)
      • Refutation
        • P(b);
    • Try
      • Q(H);
      • Vars
        • P(b);SBLOCK::R(C)
        • P(e);SBLOCK::QAB(H)
      • Refutation
        • P(d);
  • Actual
    • S(A);
    • Vars
      • K(a);S_FLIGHT,XS(A)::QAR2(H)
      • P(b);SBLOCK::S(A)
      • P(e);N_GUARD,SBLOCK::S(A)
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