MESON Chess Problem Database

Problem Display
PID: 173842 (1b6/3P3K/3nP1B1/NpPk4/1P4p1/3nQ3/2b4R/B7 w - - 0 1)

Borovik, Boris V

Kotlyar, Valery

4th HM., Sachsische Zeitung, 1987

1b6/3P3K/3nP1B1/NpPk4/1P4p1/3nQ3/2b4R/B7

#2

10 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qe5#
    • 1...Se1
      • 2.Qe5#
    • 1...Sf2
      • 2.Qe5#
    • 1...Sxb4
      • 2.Qe5#
    • 1...Sf4
      • 2.Qe5#
    • 1...Sxc5
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sc4
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sb7
      • 2.Qe4#
    • 1...Sf7
      • 2.Qe4#
    • 1...Sc8
      • 2.Qe4#
    • 1...Se8
      • 2.Qe4#
  • Tries
    • 1.Bxd3?
      • threat
        • 2.Qe5#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sc4
        • 2.Qe4#
      • 1...Sf5
        • 2.Qe4#
      • 1...Sb7
        • 2.Qe4#
      • 1...Sf7
        • 2.Qe4#
      • 1...Sc8
        • 2.Qe4#
      • 1...Se8
        • 2.Qe4#
      • 1...Bxd3+!
    • 1.Rd2?
      • threat
        • 2.Qe5#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sc4
        • 2.Qe4#
      • 1...Sb7
        • 2.Qe4#
      • 1...Sf7
        • 2.Qe4#
      • 1...Sc8
        • 2.Qe4#
      • 1...Se8
        • 2.Qe4#
      • 1...Sf5!
    • 1.Rh5+?
      • 1...Se5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Sf5!
    • 1.d8Q?
      • threat
        • 2.Qe4#
      • 1...Sxb4
        • 2.Qe5#
      • 1...Sxc5
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sc1
        • 2.Qe5#
      • 1...Se1
        • 2.Qe5#
      • 1...Sf2
        • 2.Qe5#
      • 1...Sf4
        • 2.Qe5#
      • 1...Sb2!
    • 1.d8R?
      • threat
        • 2.Qe4#
      • 1...Sxb4
        • 2.Qe5#
      • 1...Sxc5
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sc1
        • 2.Qe5#
      • 1...Se1
        • 2.Qe5#
      • 1...Sf2
        • 2.Qe5#
      • 1...Sf4
        • 2.Qe5#
      • 1...Sb2!
  • Keys
    • 1.Re2!
      • threat
        • 2.Qd4#
      • 1...Se5
        • 2.Qxe5#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sb2
        • 2.Qe5#
      • 1...Sf5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • S(b);N_GUARD,P_PINB(H)::QAR1(C)
    • S(b);N_GUARD,P_PINB(H),XP(D)::QAR1(C)
    • S(b);N_GUARD,P_PINB(H),XP(F)::QAR1(C)
    • S(b);N_GUARD,P_PINB(H)::QAR1(C),XS(b)
    • S(f);N_GUARD::QAB1(C)
    • S(f);N_GUARD::QAB1(C),XS(f)
  • Tries
    • Try
      • B(H);P_SPINB(H),XS(b)
      • Threat
        • QAR1(C)
      • Vars
        • S(f);N_GUARD,N_PINB(H)::QAB1(C),XS(f)
        • S(f);N_GUARD::QAB1(C)
        • S(f);N_GUARD,N_PINB(H)::QAB1(C)
      • Refutation
        • B(a);CHECK,XB(H)
    • Try
      • R(B);P_PINS(b)
      • Threat
        • QAR1(C)
      • Vars
        • S(f);N_GUARD::QAB1(C),XS(f)
        • S(f);N_GUARD::QAB1(C)
      • Refutation
        • S(f);
    • Try
      • R(B);CHECK
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • P(I);P_PINS(f)
      • Threat
        • QAB1(C)
      • Vars
        • S(b);N_GUARD,P_PINB(H),XP(D)::QAR1(C)
        • S(b);N_GUARD,P_PINB(H),XP(F)::QAR1(C)
        • S(b);N_GUARD,P_PINB(H)::QAR1(C),XS(b)
        • S(b);N_GUARD,P_PINB(H)::QAR1(C)
      • Refutation
        • S(b);P_PINB(H)
    • Try
      • P(I);P_PINS(f)
      • Threat
        • QAB1(C)
      • Vars
        • S(b);N_GUARD,P_PINB(H),XP(D)::QAR1(C)
        • S(b);N_GUARD,P_PINB(H),XP(F)::QAR1(C)
        • S(b);N_GUARD,P_PINB(H)::QAR1(C),XS(b)
        • S(b);N_GUARD,P_PINB(H)::QAR1(C)
      • Refutation
        • S(b);P_PINB(H)
  • Actual
    • R(B);
    • Threat
      • QAR1(C)
    • Vars
      • S(b);N_GUARD,P_PINB(H)::QAR1(C),XS(b)
      • S(f);N_GUARD::QAB1(C),XS(f)
      • S(b);N_GUARD,P_PINB(H)::QAR1(C)
      • S(f);N_GUARD::QAB1(C)
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