MESON Chess Problem Database

Problem Display
PID: 159204 (8/8/8/8/3BR2K/3Q1B2/5r1k/8 w - - 0 1)

Abdullayev, Elmar

ChessStar, 2015

8/8/8/8/3BR2K/3Q1B2/5r1k/8

#2

5 + 2

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2
      • 2.Qxc2#
    • 1...Rd2
      • 2.Qxd2#
    • 1...Re2
      • 2.Rxe2#
      • 2.Qxe2#
  • Tries
    • 1.Qb1?
      • threat
        • 2.Be5#
        • 2.Qh1#
      • 1...Rxf3
        • 2.Qg1#
      • 1...Rf1
        • 2.Qb8#
      • 1...Rg2!
    • 1.Qf1?
      • threat
        • 2.Be5#
        • 2.Qh1#
        • 2.Qxf2#
      • 1...Rxf3
        • 2.Qg1#
      • 1...Rg2
        • 2.Qxg2#
      • 1...Ra2
        • 2.Bg1#
        • 2.Be5#
        • 2.Qh3#
        • 2.Qg1#
        • 2.Qh1#
      • 1...Rb2
        • 2.Bg1#
        • 2.Be5#
        • 2.Qh3#
        • 2.Qg1#
        • 2.Qh1#
      • 1...Rc2
        • 2.Bg1#
        • 2.Be5#
        • 2.Qh3#
        • 2.Qg1#
        • 2.Qh1#
      • 1...Rd2
        • 2.Bg1#
        • 2.Be5#
        • 2.Qh3#
        • 2.Qg1#
        • 2.Qh1#
      • 1...Re2
        • 2.Bg1#
        • 2.Be5#
        • 2.Rxe2#
        • 2.Qxe2#
        • 2.Qh3#
        • 2.Qg1#
        • 2.Qh1#
      • 1...Rxf1!
    • 1.Qc2?
      • threat
        • 2.Qxf2#
      • 1...Kg1
        • 2.Qxf2#
      • 1...Rg2
        • 2.Qxg2#
      • 1...Rd2
        • 2.Qxd2#
        • 2.Qc7#
      • 1...Re2
        • 2.Rxe2#
        • 2.Qxe2#
        • 2.Qc7#
      • 1...Rxc2!
    • 1.Qd2?
      • threat
        • 2.Qxf2#
      • 1...Kg1
        • 2.Qxf2#
      • 1...Rg2
        • 2.Qxg2#
      • 1...Re2
        • 2.Rxe2#
        • 2.Qf4#
        • 2.Qxe2#
      • 1...Rxd2!
    • 1.Qe3?
      • threat
        • 2.Qxf2#
      • 1...Kg1
        • 2.Qxf2#
      • 1...Rxf3
        • 2.Qg1#
      • 1...Rf1
        • 2.Be5#
        • 2.Qf4#
      • 1...Ra2
        • 2.Be5#
        • 2.Qg1#
        • 2.Qf4#
      • 1...Rb2
        • 2.Be5#
        • 2.Qg1#
        • 2.Qf4#
      • 1...Rc2
        • 2.Be5#
        • 2.Qg1#
        • 2.Qf4#
      • 1...Rd2
        • 2.Be5#
        • 2.Qg1#
        • 2.Qxd2#
        • 2.Qf4#
      • 1...Re2
        • 2.Be5#
        • 2.Qg1#
        • 2.Qf4#
        • 2.Qxe2#
      • 1...Rg2!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qxf2#
      • 1...Kg1
        • 2.Qxf2#
      • 1...Rxe2
        • 2.Rxe2#
      • 1...Rg2
        • 2.Qxg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(a);OGATEB::QAR(A),XR(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XB(B)::QAB1(A)
        • R(a);::QAB(A)
      • Refutation
        • R(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • R(a);XB(B)::QAB1(A)
        • R(a);N_GUARD::QAR1(A),XR(a)
      • Refutation
        • R(a);XQ(A)
    • Try
      • Q(A);P_PINR(a)
      • Threat
        • QAR2(A),XR(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(A),XR(a)
        • R(a);OGATE::QAR1(A),XR(a)
      • Refutation
        • R(a);N_SPINR(a),XQ(A)
    • Try
      • Q(A);P_PINR(a)
      • Threat
        • QAR2(A),XR(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(A),XR(a)
        • R(a);OGATE::QAR1(A),XR(a)
      • Refutation
        • R(a);N_SPINR(a),XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XR(a)
      • Vars
        • K(b);P_SPINR(a),S_FLIGHT::QAB1(A),XR(a)
        • R(a);OGATE,XB(B)::QAB1(A)
      • Refutation
        • R(a);
  • Actual
    • Q(A);P_PINR(a)
    • Threat
      • QAR2(A),XR(a)
    • Vars
      • K(b);S_FLIGHT::QAB1(A),XR(a)
      • R(a);N_SPINR(a),OGATE,XQ(A)::R(D),XR(a)
      • R(a);OGATE::QAR1(A),XR(a)
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