MESON Chess Problem Database

Problem Display
PID: 160025 (8/8/8/5Q2/7R/5Nk1/6n1/7K w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1996

8/8/8/5Q2/7R/5Nk1/6n1/7K

#2

4 + 2

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Kg1?
      • threat
        • 2.Rh3#
        • 2.Qh3#
        • 2.Qg4#
      • 1...Sf4
        • 2.Qg4#
        • 2.Qxf4#
      • 1...Se3
        • 2.Rh3#
        • 2.Qh3#
        • 2.Qf4#
      • 1...Sxh4!
    • 1.Sg1?
      • threat
        • 2.Rh3#
        • 2.Rg4#
      • 1...Sxh4
        • 2.Se2#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Se3
        • 2.Rh3#
        • 2.Qf4#
      • 1...Kxh4!
    • 1.Sd2?
      • threat
        • 2.Rh3#
      • 1...Sxh4
        • 2.Sf1#
        • 2.Se4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Kxh4!
    • 1.Sd4?
      • threat
        • 2.Rh3#
      • 1...Sxh4
        • 2.Se2#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Kxh4!
    • 1.Se5?
      • threat
        • 2.Rh3#
      • 1...Kxh4
        • 2.Qg4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sxh4!
    • 1.Sg5?
      • threat
        • 2.Rh3#
        • 2.Rg4#
      • 1...Sxh4
        • 2.Se4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Se3
        • 2.Rh3#
        • 2.Qf4#
      • 1...Kxh4!
    • 1.Rg4+?
      • 1...Kh3
        • 2.Sg1#
        • 2.Sg5#
        • 2.Rxg2#
        • 2.Rg5#
        • 2.Rg6#
        • 2.Rg7#
        • 2.Rg8#
      • 1...Kf2!
  • Keys
    • 1.Sh2!
      • threat
        • 2.Rh3#
      • 1...Kxh4
        • 2.Qg4#
      • 1...Sxh4
        • 2.Sf1#
      • 1...Sf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • DUALS(3)
      • Refutation
        • S(a);XR(C)
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);SBLOCK,XR(C)::S(B)
        • S(a);N_GUARD::QAB1(D),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • S(B);
      • Threat
        • R1(C)
      • Vars
        • S(a);N_GUARD::QAB1(D),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • S(B);
      • Threat
        • R1(C)
      • Vars
        • S(a);SBLOCK,XR(C)::S(B)
        • S(a);N_GUARD::QAB1(D),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • S(B);
      • Threat
        • R1(C)
      • Vars
        • K(b);S_FLIGHT,XR(C)::QAR1(D)
        • S(a);N_GUARD::QAB1(D),XS(a)
      • Refutation
        • S(a);XR(C)
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);SBLOCK,XR(C)::S(B)
        • S(a);N_GUARD::QAB1(D),XS(a)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • R(C);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • R1(C)
    • Vars
      • K(b);S_FLIGHT,XR(C)::QAR1(D)
      • S(a);SBLOCK,XR(C)::S(B)
      • S(a);N_GUARD::QAB1(D),XS(a)
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