MESON Chess Problem Database

Problem Display
PID: 159574 (K2R4/1BP4r/p1R5/3pPN2/1p1Pk1P1/r5P1/p3P1N1/1q5Q w - - 0 1)

Amirov, Talip Khasanovich

Hahodkinsky working, 1965

K2R4/1BP4r/p1R5/3pPN2/1p1Pk1P1/r5P1/p3P1N1/1q5Q

#2

13 + 8

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Se1+?
      • 1...Rf3
        • 2.Qxf3#
        • 2.exf3#
      • 1...Rxh1!
    • 1.Sgh4+?
      • 1...Rf3
        • 2.Qxf3#
      • 1...Qxh1!
    • 1.Rc1?
      • threat
        • 2.Bxd5#
      • 1...Ra5
        • 2.Sgh4#
      • 1...Rd7
        • 2.Sge3#
      • 1...Qb3!
    • 1.Rc4?
      • threat
        • 2.Sd6#
        • 2.Bxd5#
      • 1...Ra5
        • 2.Sd6#
      • 1...Rh6
        • 2.Bxd5#
      • 1...Rd7!
    • 1.Rh6?
      • threat
        • 2.Bxd5#
      • 1...Qb3
        • 2.Sge3#
      • 1...Ra5
        • 2.Se1#
      • 1...Rd7!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Bxd5#
      • 1...Qb3
        • 2.Sgh4#
      • 1...Ra5
        • 2.Re3#
      • 1...Rd7
        • 2.Se1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • R(h);XQ(A)
    • Try
      • S(C);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(A),XR(c)
      • Refutation
        • Q(a);XQ(A)
    • Try
      • R(I);P_PINP(f)
      • Threat
        • B(J),XP(f)
      • Vars
        • R(c);N_GUARD::QAB(A)+S(C)
        • R(h);N_GUARD::QAB(A)+S(C)
      • Refutation
        • Q(a);
    • Try
      • R(I);P_PINP(f)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);::S(H)
        • R(h);::B(J),XP(f)
      • Refutation
        • R(h);
    • Try
      • R(I);P_PINP(f)
      • Threat
        • B(J),XP(f)
      • Vars
        • Q(a);N_GUARD::QAB(A)+S(C)
        • R(c);N_GUARD::QAB(A)+S(C)
      • Refutation
        • R(h);
  • Actual
    • R(I);P_PINP(f)
    • Threat
      • B(J),XP(f)
    • Vars
      • Q(a);N_GUARD::QAB(A)+S(C)
      • R(c);N_GUARD::R1(I)
      • R(h);N_GUARD::QAB(A)+S(C)
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