MESON Chess Problem Database

Problem Display
PID: 245471 (8/8/8/K7/2pk4/4N1P1/4R3/5Q2 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2000

8/8/8/K7/2pk4/4N1P1/4R3/5Q2

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rd2+?
      • 1...Kxe3
        • 2.Qe2#
        • 2.Qf4#
      • 1...Ke4
        • 2.Qf4#
      • 1...Kc5
        • 2.Qxc4#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kc3!
    • 1.Qd1+?
      • 1...Kc3
        • 2.Sd5#
      • 1...Ke4
        • 2.Qd5#
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5!
    • 1.Qf3?
      • 1...Kc3
        • 2.Sf5#
      • 1...Kd3
        • 2.Sc2#
        • 2.Sf5#
      • 1...Kc5
        • 2.Qd5#
      • 1...c3
        • 2.Qd5#
      • 1...Ke5!
    • 1.Qf4+?
      • 1...Kc3
        • 2.Qxc4#
      • 1...Kd3
        • 2.Qxc4#
      • 1...Kc5!
    • 1.Qf5?
      • 1...c3
        • 2.Qd5#
      • 1...Kc3!
  • Keys
    • 1.Qf7!
      • 1...Kc3
        • 2.Qxc4#
      • 1...Kd3
        • 2.Qxc4#
      • 1...Ke4
        • 2.Qd5#
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5
        • 2.Sf5#
      • 1...c3
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
        • K(b);S_FLIGHT::QAR1(A),XP(a)
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::S(C)
        • K(b);OGATE,P-FLIGHT::QAB1(A)
        • K(b);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAR(A)+S(C)
        • K(b);S_FLIGHT::QAR1(A)
        • P(a);SBLOCK::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(A),XP(a)
        • K(b);OGATE,P-FLIGHT::QAB1(A),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(a);SBLOCK::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAR1(A),XP(a)
      • K(b);P-FLIGHT::QAB1(A),XP(a)
      • K(b);P-FLIGHT::QAB1(A)
      • K(b);S_FLIGHT::QAR1(A)
      • K(b);S_FLIGHT::R(B)+S(C)
      • P(a);SBLOCK::QAR1(A)
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