MESON Chess Problem Database

Problem Display
PID: 245519 (2N5/1K6/4k1p1/5R2/8/8/5Q2/5B2 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2004

2N5/1K6/4k1p1/5R2/8/8/5Q2/5B2

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Ra5?
      • threat
        • 2.Bh3#
      • 1...g5
        • 2.Qf5#
      • 1...Kd7!
    • 1.Rb5?
      • threat
        • 2.Bh3#
      • 1...g5
        • 2.Qf5#
      • 1...Kd7!
    • 1.Rc5?
      • threat
        • 2.Bh3#
      • 1...g5
        • 2.Qf5#
      • 1...Kd7!
    • 1.Rd5?
      • 1...g5
        • 2.Qf5#
      • 1...Kxd5!
    • 1.Re5+?
      • 1...Kd7
        • 2.Qd4#
        • 2.Qd2#
      • 1...Kxe5!
    • 1.Qe1+?
      • 1...Kd7
        • 2.Rd5#
        • 2.Qe7#
      • 1...Kxf5!
    • 1.Qe3+?
      • 1...Kd7
        • 2.Rd5#
        • 2.Qe7#
      • 1...Kxf5!
    • 1.Qd4?
      • threat
        • 2.Rf6#
        • 2.Qd5#
      • 1...gxf5
        • 2.Bc4#
      • 1...Kxf5!
    • 1.Qc5?
      • threat
        • 2.Qd5#
      • 1...Kd7
        • 2.Qe7#
      • 1...gxf5!
    • 1.Qb6+?
      • 1...Kd7
        • 2.Bb5#
      • 1...Kxf5!
    • 1.Qe2+?
      • 1...Kd7
        • 2.Rd5#
        • 2.Qe7#
      • 1...Kxf5!
  • Keys
    • 1.Bh3!
      • threat
        • 2.Ra5#
        • 2.Rb5#
        • 2.Rc5#
        • 2.Rg5#
        • 2.Rh5#
      • 1...Kd7
        • 2.Rf8#
      • 1...gxf5
        • 2.Qxf5#
      • 1...g5
        • 2.Rxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Threat
        • B(A)
      • Vars
        • P(b);N_GUARD::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Threat
        • B(A)
      • Vars
        • P(b);N_GUARD::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Threat
        • B(A)
      • Vars
        • P(b);N_GUARD::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • P(b);N_GUARD::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • R(C);CHECK
      • Refutation
        • K(a);P-FLIGHT,XR(C)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);SBLOCK,XR(C)::B(A)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • P(b);XR(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(C)
  • Actual
    • B(A);
    • Threat
      • DUALS(5)
    • Vars
      • K(a);S_FLIGHT::B(A)+R(C)
      • P(b);OGATE,P_SPINP(b),XR(C)::QAB1(B),XP(b)
      • P(b);::B(A)+R(C),XP(b)
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